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## org.faceless.pdf2
Class OutputProfile

    java.lang.Object
      org.faceless.pdf2.OutputProfile

    public class OutputProfile

extends Object

An OutputProfile defines a variation on the PDF specification which a document must adhere to. PDF is a large specification and not all features are compatible with all readers. An obvious example is Acrobat 4.0 being unable to read documents created for later versions. Less obvious examples include creating documents compatible with the PDF/X standard used in the printing industry.

Each profile is made up of two lists, "denied" and "required". Trying to use a denied feature in a PDF throws an Exception. And a required feature must be in place before the PDF is written, otherwise again an Exception is thrown.

So, how do you use them? First, you can set an OutputProfile on a PDF, which will ensure that when it's rendered it meets the requirements. This is done with the `PDF.setOutputProfile()` method. Setting this on a new PDF ensures you don't inadvertantly create a document that cannot be read on your chosen platform. If you try to use a denied feature, an Exception will be thrown detailing where and what the problem is. Here's an example - in this case an exception will be thrown on the last line, where you're trying to use an Acrobat 5.0 feature in a document destined for Acrobat 4.0.

     PDF pdf = new PDF();
     pdf.setOutputProfile(OutputProfile.Acrobat4Compatible);
     StandardEncryptionHandler handler = new StandardEncryptionHandler();
     handler.setAcrobat5Level(handler.PRINT_ALL, handler.CHANGE_NONE, handler.EXTRACT_NONE);
     pdf.setEncryptionHandler(handler);  // IllegalStateException thrown here

Setting a profile on a PDF that has been read in is a little different, as the PDF needs to be parsed to determine which features it already uses. This functionality was added in release 2.6.1, and centers around the `PDF.getFullOutputProfile()` method.

The first stage is to call `PDF.getFullOutputProfile()` on the PDF. This will scan the entire document and determines the full list of features that it uses. This can take some time, and requires the Extended Edition plus Viewer license, but the end result will be a complete list of every feature used in the PDF.

To apply a profile to the PDF you can then call `PDF.setOutputProfile()`. The library will then attempt to modify the PDF to match the profile - although not all features can be modified successfully (for instance, if the profile requires embedded fonts and the PDF doesn't have them, the library can't fix it). However if the method succeeds without throwing an `IllegalStateException` then the PDF matches the new profile and can be saved.

You can also check to see if a PDF matches a profile in advance by calling the `isCompatibleWith()` method. This returns a list of `Features` which may cause problems during conversion. See that method for an example of how to use it.

Also new in 2.6.1 is the `OutputProfile.Feature` subclass, which lists the individual features which can be checked in an OutputProfile. These features, which will be added to over time, can be added to either list in a Profile via the `setRequired()`, `setDenied()`, `clearRequired()` and `clearDenied()` methods to customize it. Note that the supplied profiles cannot be modified in this way - you must make a copy with the `OutputProfile(OutputProfile)` constructor and modify that.

Since:
  2.0, with major changes in 2.6.1
See Also:
  `PDF.setOutputProfile(org.faceless.pdf2.OutputProfile)`, `PDF.getFullOutputProfile()`, `PDF.getBasicOutputProfile()`, `OutputProfile.Feature`

Nested Class Summary
`static class` | `OutputProfile.Feature` An `OutputProfile` is made up of `Features`, which may be required or denied.
`static class` | `OutputProfile.FontInfo` Represents information about a font used in the document.

Field Summary
`static OutputProfile` | `Acrobat4Compatible` Force the document to be Acrobat 4.0 compatible.
`static OutputProfile` | `Acrobat5Compatible` Force the document to be Acrobat 5.0 compatible.
`static OutputProfile` | `Acrobat6Compatible` Force the document to be Acrobat 6.0 compatible.
`static OutputProfile` | `Acrobat7Compatible` Force the document to be Acrobat 7.0 compatible.
`static OutputProfile` | `Acrobat8Compatible` Force the document to be Acrobat 8.0 compatible.
`static OutputProfile` | `Acrobat9Compatible` Force the document to be Acrobat 9.0 compatible.
`static OutputProfile` | `AcrobatXCompatible` Force the document to be Acrobat X compatible.
`static OutputProfile` | `Default` This is the default OutputProfile.
`static OutputProfile` | `ImageOnly` Add some features to the PDF that are useful when the PDF consists only of one big JPEG image.
`static OutputProfile` | `NoCompression` Save the document with no compression.
`static OutputProfile` | `NotPDFX` This OutputProfile removes any PDF/X information from the document - useful if a document has been altered and no longer meets that requirement.
`static OutputProfile` | `PDFA1b_2005` An OutputProfile representing the PDF/A-1b:2005 specification.
`static OutputProfile` | `PDFA1b_2005_Acrobat` An OutputProfile representing the PDF/A-1b:2005 specification, as interpreted by Acrobat.
`static OutputProfile` | `PDFX1a_2001` Save the document so that it conforms to the PDF/X-1a:2001 (ISO15390-1) prepress specification.
`static OutputProfile` | `PDFX1a_2003` Save the document so that it conforms to the PDF/X-1a:2003 (ISO15390-4) prepress specification.
`static OutputProfile` | `PDFX3_2002` Save the document so that it conforms to the PDF/X-3:2002 (ISO15390-3) prepress specification.
`static OutputProfile` | `PDFX3_2003` Save the document so that it conforms to the PDF/X-3:2003 (ISO15390-6) prepress specification.
`static OutputProfile` | `PDFX3_2003_Acrobat` Deprecated. use `PDFX3_2003` instead

Constructor Summary
`OutputProfile(OutputProfile original)` Create an OutputProfile that is a clone of the specific OutputProfile.
`OutputProfile(OutputProfile template, String identifier, String description, String registry, String info, ICC_Profile iccprofile)` Create a new OutputProfile based on the PDF/X or PDF/A standard.

Method Summary
`void` | `clearDenied(OutputProfile.Feature feature)` Remove a Feature from the "Denied" list of a profile.
`void` | `clearRequired(OutputProfile.Feature feature)` Remove a Feature from the "Required" list of a profile.
`Set` | `getFontInfo()` Returns information about all the fonts used in the document.
`String` | `getOutputCondition(String type)` Return the Output Condition for the specified Output Intent if specified, or `null` otherwise.
`String` | `getOutputConditionIdentifier(String type)` Return the Output Condition Identifier for the specified Output Intent.
`String` | `getOutputConditionRegistry(String type)` Return the Registry field of the specified Output Intent if specified, or `null` otherwise.
`ICC_Profile` | `getOutputIntentDestinationProfile(String type)` Return the embedded ICC profile for the specified Output Intent, or `null` if none exists.
`String` | `getOutputIntentInfo(String type)` Return the Info field of the specified Output Intent if specified, or `null` otherwise.
`String` | `getProfileName()` Return the descriptive name of the profile
`OutputProfile.Feature[]` | `isCompatibleWith(OutputProfile profile)` Check to see if the current OutputProfile matches the requrements of the specified OutputProfile.
`boolean` | `isDenied(OutputProfile.Feature feature)` Return true if the Feature is in the "Denied" list in this profile.
`boolean` | `isRequired(OutputProfile.Feature feature)` Return true if the Feature is in the "Required" list in this profile.
`boolean` | `isSet(OutputProfile.Feature feature)` Return true if the Feature is currently set in this profile.
`void` | `setDenied(OutputProfile.Feature feature)` Add a feature to the "Denied" list of this profile.
`void` | `setRequired(OutputProfile.Feature feature)` Add a feature to the "Required" list of this profile.
`String` | `toString()`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### Default

    public static final OutputProfile Default

  This is the default OutputProfile. The resulting document may not be readable in Acrobat 4 or 5, depending on which features are used (128-bit encryption, for instance).

### Acrobat4Compatible

    public static final OutputProfile Acrobat4Compatible

  Force the document to be Acrobat 4.0 compatible. An error will be thrown if any non-Acrobat 4.x compatible actions are performed. Specifically this includes using alpha transparency, encrypting the document with 128-bit encryption or anything that's not allowed under a later version of Acrobat.

### Acrobat5Compatible

    public static final OutputProfile Acrobat5Compatible

  Force the document to be Acrobat 5.0 compatible. The resulting PDF may not be readable in earlier viewers, and an error will be thrown if any non-Acrobat 5.x compatible actions are performed. The only non-Acrobat 5.x specific features are setting unencrypted metadata in the `StandardEncryptionHandler`, using characters requiring the UTF-16 encoding in a `StandardCJKFont`, using `AES Encryption`, embedding 16-bit or JPX-encoded images, or anything that isn't allowed in a later version of Acrobat.

### Acrobat6Compatible

    public static final OutputProfile Acrobat6Compatible

  Force the document to be Acrobat 6.0 compatible. The resulting document will not be readable in earlier viewers, as it will be compressed using the Document Structure Compression added in Acrobat 6.0 - this results in considerably smaller documents, but which cannot be loaded in older viewers. An error will be thrown if any non-Acrobat 6.x compatible actions are performed. Currently the only Acrobat 7 specific feature is encrypting using AES encryption. See `StandardEncryptionHandler.setAcrobat7Level()`.

  Since:
    2.4.3

### Acrobat7Compatible

    public static final OutputProfile Acrobat7Compatible

  Force the document to be Acrobat 7.0 compatible. The resulting document may not be readable in earlier viewers depending on features used, and it definitely won't be readable by viewers prior to Acrobat 6.0 as it will be compressed using the Document Structure Compression added in Acrobat 6.0 - this results in considerably smaller documents, but which cannot be loaded in older viewers.

  Since:
    2.6.1

### Acrobat8Compatible

    public static final OutputProfile Acrobat8Compatible

  Force the document to be Acrobat 8.0 compatible. The resulting document may not be readable in earlier viewers depending on features used, and it definitely won't be readable by viewers prior to Acrobat 6.0 as it will be compressed using the Document Structure Compression added in Acrobat 6.0 - this results in considerably smaller documents, but which cannot be loaded in older viewers.

  Since:
    2.7.9

### Acrobat9Compatible

    public static final OutputProfile Acrobat9Compatible

  Force the document to be Acrobat 9.0 compatible. The resulting document may not be readable in earlier viewers depending on features used, and it definitely won't be readable by viewers prior to Acrobat 6.0 as it will be compressed using the Document Structure Compression added in Acrobat 6.0 - this results in considerably smaller documents, but which cannot be loaded in older viewers.

  Since:
    2.11

### AcrobatXCompatible

    public static final OutputProfile AcrobatXCompatible

  Force the document to be Acrobat X compatible. The resulting document may not be readable in earlier viewers depending on features used, and it definitely won't be readable by viewers prior to Acrobat 6.0 as it will be compressed using the Document Structure Compression added in Acrobat 6.0 - this results in considerably smaller documents, but which cannot be loaded in older viewers.

  Since:
    2.11.23

### NoCompression

    public static final OutputProfile NoCompression

  Save the document with no compression. This is useful for debugging, or (when creating new documents) when speed really matters. Setting this profile on existing documents will result in currently compressed streams being uncompressed.

### ImageOnly

    public static final OutputProfile ImageOnly

  Add some features to the PDF that are useful when the PDF consists only of one big JPEG image. This adds several options when the document is loaded in Acrobat 6.x - specifically the ability to edit and print pictures using the standard "print picture" settings, and also the ability to order photographic prints of the specified image. This only works if the document pages contain a single JPEG image - if not, this setting is the same as `Default`

### PDFX1a_2001

    public static final OutputProfile PDFX1a_2001

  Save the document so that it conforms to the PDF/X-1a:2001 (ISO15390-1) prepress specification. This places a number of restrictions on the document, including no RGB colors (including RGB alternates for spot colors), only embedded fonts, no encryption/annotations/actions/javascript/transparency, and the "Title" and "Trapped" fields must be set in the documents info dictionary. The full list of requirements is in the ISO specification.

  You can use this static OutputProfile to verify documents, but creating new or converting existing documents to this standard requires that they have an Output Intent specified, in which case you should use the `OutputProfile(OutputProfile,String,String,String,String,ICC_Profile)` constructor to define one.

  Since:
    2.6.1

### PDFX1a_2003

    public static final OutputProfile PDFX1a_2003

  Save the document so that it conforms to the PDF/X-1a:2003 (ISO15390-4) prepress specification. This is almost identical to PDF/X-1a:2001 except the spec has been brought into line with PDF 1.4

  You can use this static OutputProfile to verify documents, but creating new or converting existing documents to this standard requires that they have an Output Intent specified, in which case you should use the `OutputProfile(OutputProfile,String,String,String,String,ICC_Profile)` constructor to define one.

  Since:
    2.6.1

### PDFX3_2002

    public static final OutputProfile PDFX3_2002

  Save the document so that it conforms to the PDF/X-3:2002 (ISO15390-3) prepress specification. This profile allows device-independent color to be specified in the document (ICC or other calibrated profiles), provided a suitable profile is defined in the Output Intent. That profile may be GrayScale, RGB or CMYK.

  You can use this static OutputProfile to verify documents, but creating new or converting existing documents to this standard requires that they have an Output Intent specified, in which case you should use the `OutputProfile(OutputProfile,String,String,String,String,ICC_Profile)` constructor to define one.

  Since:
    2.6.1

### PDFX3_2003

    public static final OutputProfile PDFX3_2003

  Save the document so that it conforms to the PDF/X-3:2003 (ISO15390-6) prepress specification. This is an updated version of PDF/X-3:2002 and basically identical except the allowed PDF version is 1.4

  You can use this static OutputProfile to verify documents, but creating new or converting existing documents to this standard requires that they have an Output Intent specified, in which case you should use the `OutputProfile(OutputProfile,String,String,String,String,ICC_Profile)` constructor to define one.

  Since:
    2.6.1

### PDFX3_2003_Acrobat

    public static final OutputProfile PDFX3_2003_Acrobat

  Deprecated. use `PDFX3_2003` instead
  A deprecated profile. Preflighting corrections in 2.11.5 mean this is no longer required, so please use `PDFX3_2003` instead (this is now just a synonym for that variable).

  Since:
    2.11.3

### NotPDFX

    public static final OutputProfile NotPDFX

  This OutputProfile removes any PDF/X information from the document - useful if a document has been altered and no longer meets that requirement.

  Since:
    2.6.1

### PDFA1b_2005

    public static final OutputProfile PDFA1b_2005

  An OutputProfile representing the PDF/A-1b:2005 specification. You can use this static OutputProfile to verify documents, but creating new or converting existing documents to this standard requires that they have an Output Intent specified, in which case you should use the `OutputProfile(OutputProfile,String,String,String,String,ICC_Profile)` constructor to define one - see that constructor for a detailed example. The specification is here

  Since:
    2.6.7
  See Also:
    `PDFA1b_2005_Acrobat`

### PDFA1b_2005_Acrobat

    public static final OutputProfile PDFA1b_2005_Acrobat

  An OutputProfile representing the PDF/A-1b:2005 specification, as interpreted by Acrobat. This is identical to `PDFA1b_2005` but requires an OutputIntent of `GTS_PDFA` rather than `GTS_PDFA1`. This is required to meet the PDF/A-1b preflight test in Acrobat 7 and 8, although it doesn't match the official PDF/A specification.

  Since:
    2.10

Constructor Detail

### OutputProfile

    public OutputProfile(OutputProfile template,
                         String identifier,
                         String description,
                         String registry,
                         String info,
                         ICC_Profile iccprofile)

  Create a new OutputProfile based on the PDF/X or PDF/A standard. This constructor defines an Output Intent, which is required for valid PDF/X or PDF/A documents. If the Registry is "http://www.color.org" then technically the ICC Profile is optional, although we always recommend including it (as otherwise Separation and DeviceN colors will not work and some Acrobat 8.0 based workflows may have problems). A special exception is if the identifier is set to "sRGB", in which case the sRGB profile will be embedded automatically.

  For example, to preflight a document using PDF/X-1a:2001 with an Output Condition of "CGATS TR 001":

       ICC_Profile icc = ICC_Profile.getInstance("US_Web_Coated_SWOP.icm");
       OutputProfile profile = new OutputProfile(OutputProfile.PDFX1a_2001,
                                                   "CGATS TR 001", null,
                                                   "http://www.color.org", null, icc);
       pdf.setOutputProfile(profile);

  or, to create a small but perfectly formed PDF/A-1b:2005 document

       ICC_Profile icc = ICC_Profile.getInstance(ColorSpace.CS_sRGB);
       OutputProfile profile = new OutputProfile(OutputProfile.PDFA1b_2005, "sRGB", null, "http://www.color.org", null, icc);
       PDF.setLicenseKey(...);   // If no license key is set the "DEMO" stamp will invalidate the PDF
       PDF pdf = new PDF();
       pdf.setOutputProfile(profile);
       PDFPage page = pdf.newPage("A4");
       PDFStyle style = new PDFStyle();
       PDFFont font = new OpenTypeFont(new FileInputStream("font.ttf", 2));  // Load font to embed
       style.setFont(font, 24);
       style.setFillColor(Color.black); // Must be RGB as we're using sRGB Output Intent.
       page.setStyle(style);
       page.drawText("Hello, PDF/A World", 100, 600);
       pdf.setInfo("Author", "my name");
       pdf.setInfo("Title", "my title");
       pdf.render(outputstream);

  Parameters:
    `template` - the OutputProfile to base this profile on. Must be `PDFX1a_2001`, `PDFX1a_2003`, `PDFX3_2002`, `PDFX3_2003` or `PDFA1b_2005`
    `identifier` - The name of the output condition, eg "CGATS TR 001" or "sRGB". Required.
    `description` - An optional description of the condition. If the identifier is "CGATS TR 001", "IFRA22", "IFRA28", "FOGRA27", "FOGRA28", "FOGRA29" or "FOGRA30", or the profile is sRGB, then this may be null to use the standard description.
    `registry` - The registry in which the condition is specified. If a profile is specified this is optional, otherwise it's usually the string "http://www.color.org"
    `info` - Additional information about the condition. Optional.
    `iccprofile` - The ICC profile to target. Optional only if a common profile (like sRGB) is used.
  Since:
    2.6.1

### OutputProfile

    public OutputProfile(OutputProfile original)

  Create an OutputProfile that is a clone of the specific OutputProfile. This is necessary when setting optional flags, because the static OutputProfiles cannot be modifed. For example, to create an OutputProfile that is identical to the `Default` Profile but that will recompress uncompressed objects, do the following:

       OutputProfile myprofile = new OutputProfile(OutputProfile.Default);
       myprofile.setRequired(OutputProfile.Feature.RegularCompression);

  Parameters:
    `original` - the original OutputProfile to copy.
  Since:
    2.3.6

Method Detail

### isSet

    public boolean isSet(OutputProfile.Feature feature)

  Return true if the Feature is currently set in this profile. This is how you determine which features a PDF has. For instance, to see if a PDF contains an XFA Form, you can do

       pdf.getBasicOutputProfile().isSet(OutputProfile.Feature.XFAForm);

  Parameters:
    `feature` - the Feature to check
  Since:
    2.6.1

### setDenied

    public void setDenied(OutputProfile.Feature feature)

  Add a feature to the "Denied" list of this profile. You can use this method to alter how the final PDF is written. For example, to cause all ICC profiles to be converted to Calibrated where possible:

       OutputProfile profile = new OutputProfile(OutputProfile.Default);
       profile.setDenied(OutputProfile.Feature.ColorSpaceICC);

  or, to cause a PDF previously saved with a Compressed XRef table to be stored with a normal one:

       OutputProfile profile = new OutputProfile(OutputProfile.Default);
       profile.setDenied(OutputProfile.Feature.CompressedXRef);

  Parameters:
    `feature` - the Feature to deny
  Throws:
    `IllegalStateException` - if you try to deny a feature which is already set or which is marked as required,
  Since:
    2.6.1

### setRequired

    public void setRequired(OutputProfile.Feature feature)

  Add a feature to the "Required" list of this profile. You can use this method to alter how the final PDF is written. For example, to cause all streams in the PDF to be compressed if they weren't already:

       OutputProfile profile = new OutputProfile(OutputProfile.Default);
       profile.setRequired(OutputProfile.Feature.RegularCompression);

  Not all feature make sense to require. For instance, requiring a `OutputProfile.Feature.PostScriptXObject` is simply going to cause your PDFs to fail when rendering, because the library doesn't create them.

  Parameters:
    `feature` - the Feature to require
  Throws:
    `IllegalStateException` - if you try to deny a feature which is already set or which is marked as required,
  Since:
    2.6.1

### clearDenied

    public void clearDenied(OutputProfile.Feature feature)

  Remove a Feature from the "Denied" list of a profile. Setting this feature in the PDF will no longer cause an exception. For example, to write Acrobat 4.0 compatible PDFs but still allow XMP Metadata, do the following:

       OutputProfile newprofile = new OutputProfile(OutputProfile.Acrobat4Compatible);
       newprofile.clearDenied(OutputProfile.Feature.XMPMetaData);

  Parameters:
    `feature` - the Feature to remove from the denied list
  Since:
    2.6.1

### clearRequired

    public void clearRequired(OutputProfile.Feature feature)

  Remove a Feature from the "Required" list of a profile. This will no longer cause the PDF to fail when writing if the feature is not set.

  Parameters:
    `feature` - the Feature to remove from the required list
  Since:
    2.6.1

### isDenied

    public boolean isDenied(OutputProfile.Feature feature)

  Return true if the Feature is in the "Denied" list in this profile.

  Parameters:
    `feature` - the Feature to check against the denied list
  Since:
    2.6.1

### isRequired

    public boolean isRequired(OutputProfile.Feature feature)

  Return true if the Feature is in the "Required" list in this profile.

  Parameters:
    `feature` - the Feature to check against the required list
  Since:
    2.6.1

### getProfileName

    public String getProfileName()

  Return the descriptive name of the profile

### isCompatibleWith

    public OutputProfile.Feature[] isCompatibleWith(OutputProfile profile)

  Check to see if the current OutputProfile matches the requrements of the specified OutputProfile. This method returns `null` if this profile is compatible, otherwise it returns a List of the features that caused this profile not to match. Those features will either be set and denied in the specified profile, or not set but required in the specified profile.

  This is best demonstrated with an example. Here is how you would run a pre-flight check on a PDF for PDF/X-1a:2001 compatibility.

       PDF pdf = new PDF(new PDFReader(new File("test.pdf")));
       OutputProfile profile = pdf.getFullOutputProfile();
       OutputProfile.Feature[] mismatch = profile.isCompatibleWith(OutputProfile.PDFX1a_2001);
       if (mismatch==null) {
          System.out.println("PDF verified against PDF/X-1a");
       } else {
          for (int i=0;i<mismatch.length;i++) {
              if (profile.isSet(mismatch[i])) {
                  System.out.println(mismatch[i]+" is not allowed in PDF/X-1a");
              } else {
                  System.out.println(mismatch[i]+" is required in PDF/X-1a but not set");
              }
          }
       }

  Note that as some features aren't set until a PDF is rendered, checking a new PDF to see if it matches it's profile won't always succeed.

  Since:
    2.6.1

### getOutputIntentDestinationProfile

    public ICC_Profile getOutputIntentDestinationProfile(String type)

  Return the embedded ICC profile for the specified Output Intent, or `null` if none exists. Currently the only supported Output Intent is PDF/X, so `type` must be `"GTS_PDFX"`

  Parameters:
    `type` - the Output Intent to get the field from - currently either "GTS_PDFX" or "GTS_PDFA1"
  Since:
    2.6.1

### getOutputConditionIdentifier

    public String getOutputConditionIdentifier(String type)

  Return the Output Condition Identifier for the specified Output Intent.

  Parameters:
    `type` - the Output Intent to get the field from - currently either "GTS_PDFX" or "GTS_PDFA1"
  Since:
    2.6.1

### getOutputCondition

    public String getOutputCondition(String type)

  Return the Output Condition for the specified Output Intent if specified, or `null` otherwise.

  Parameters:
    `type` - the Output Intent to get the field from - currently either "GTS_PDFX" or "GTS_PDFA1"
  Since:
    2.6.1

### getOutputIntentInfo

    public String getOutputIntentInfo(String type)

  Return the Info field of the specified Output Intent if specified, or `null` otherwise.

  Parameters:
    `type` - the Output Intent to get the field from - currently either "GTS_PDFX" or "GTS_PDFA1"
  Since:
    2.6.1

### getOutputConditionRegistry

    public String getOutputConditionRegistry(String type)

  Return the Registry field of the specified Output Intent if specified, or `null` otherwise.

  Parameters:
    `type` - the Output Intent to get the field from - currently either "GTS_PDFX" or "GTS_PDFA1"
  Since:
    2.6.1

### getFontInfo

    public Set getFontInfo()

  Returns information about all the fonts used in the document. This information is only available from the result of calling `PDF.getFullOutputProfile()`, and may return `null` otherwise.

  Returns:
    a read-only set of `OutputProfile.FontInfo` objects
  Since:
    2.11.9

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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