question: calls casexxx for each class of the model until one returns a non null result ; it yields that result . concode_field_sep RelationsToTraceClassPackage modelPackage concode_field_sep T caseTTransformationToPackage concode_elem_sep T caseTSubTemplateToTraceClassProps concode_elem_sep T caseTRelationToTraceClass concode_elem_sep T defaultCase
target: T function ( EObject arg0 ) { return doSwitch ( arg0 . eClass ( ) , arg0 ) ; }