question: checks the state manager to see if an instance of the specified reference already exists in the cache . concode_field_sep PTrailer trailer concode_elem_sep int nextReferenceNumber concode_elem_sep Logger logger concode_elem_sep HashMap<Reference,PObject> changes concode_field_sep int compare concode_elem_sep boolean isChanged concode_elem_sep void removeChange concode_elem_sep Object getChange concode_elem_sep Iterator<PObject> iteratorSortedByObjectNumber concode_elem_sep Reference getNewReferencNumber concode_elem_sep PTrailer getTrailer concode_elem_sep void addChange concode_elem_sep int getChangedSize
target: boolean function ( Reference arg0 ) { return changes . containsKey ( arg0 ) ; }