#ifndef RELATIONAL_ATOM_GROUP_H
#define RELATIONAL_ATOM_GROUP_H

//#ifndef ATOM_GROUP_H
//#include "Atom_group.h"
//#endif

namespace MM
{
class Expanded_atom_group;

class Relational_atom_group
{
    virtual void        fill (Expanded_atom_group & atoms) const =0;
};

}//MM

#endif //RELATIONAL_ATOM_GROUP_H
