class PD_API MoleculeBase;
class PD_API MoleculeDefinition;
class PD_API WorkspaceCreatorBase;
class PD_API IndexPairDistance;
class PD_API CovalentAtom;
class PD_API Particle;
class PD_API ParticleGroup;
class PD_API Residue;
class PD_API MoleculeRange;

