returns the result of interpreting the object as an instance of ` model element ' . this implementation returns null ; returning a non-null result will terminate the switch . concode_field_sep TypemappingPackage modelPackage concode_field_sep T casePackage concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T caseTypeMapping concode_elem_sep T caseTypeSystem concode_elem_sep T caseElement concode_elem_sep T caseNamespace concode_elem_sep T defaultCase
T function ( ModelElement arg0 ) { return null ; }