returns the result of interpreting the object as an instance of ` ielement extensible ' . this implementation returns null ; returning a non-null result will terminate the switch . concode_field_sep RecordPackage modelPackage concode_field_sep T caseBPELExtensibleElement concode_elem_sep T caseIAttributeExtensible concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T caseWSDLElement concode_elem_sep T caseExtensionElement concode_elem_sep T caseExtensibleElement concode_elem_sep T defaultCase
T function ( ElementExtensible arg0 ) { return null ; }