<s> """<STR_LIT>""" <EOL> class TransactionError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class ClassNotRegisteredError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class ImaginaryTableError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class ReferenceNotSavedError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class CannotRefreshError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class InvalidRelationshipError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class DBObjectSaveError ( Exception ) : <EOL> """<STR_LIT>""" </s>
