question: the default implementation does nothing . concode_field_sep PlaceHolder placeHolder concode_field_sep void exitExpression concode_elem_sep void enterMethodDeclaration concode_elem_sep void exitType concode_elem_sep void enterClassDeclaration concode_elem_sep void exitGoal concode_elem_sep void exitVarDeclaration concode_elem_sep void exitStatement concode_elem_sep void enterExpression concode_elem_sep void enterType concode_elem_sep void exitMethodDeclaration concode_elem_sep void enterVarDeclaration concode_elem_sep void enterMainClass concode_elem_sep void exitEveryRule concode_elem_sep void visitErrorNode concode_elem_sep void enterStatement concode_elem_sep void visitTerminal concode_elem_sep void exitClassDeclaration concode_elem_sep void exitMainClass concode_elem_sep void enterGoal
target: void function ( @ NotNull ParserRuleContext arg0 ) { }