question: tell whether the given group pair is a contact in this groupcontactset , the comparison is done by matching residue numbers and chain identifiers concode_field_sep long serialVersionUID concode_elem_sep HashMap<Pair<ResidueIdentifier>,GroupContact> contacts concode_field_sep void add concode_elem_sep Pair<ResidueIdentifier> getResIdPairFromContact concode_elem_sep Iterator<GroupContact> iterator concode_elem_sep int size concode_elem_sep void atoms2groups concode_elem_sep GroupContact getContact
target: boolean function ( Group arg0 , Group arg1 ) { return hasContact ( arg0 . getResidueNumber ( ) , arg1 . getResidueNumber ( ) ) ; }