question: the default implementation does nothing . concode_field_sep PlaceHolder placeHolder concode_field_sep void exitRule_ concode_elem_sep void exitOneormore concode_elem_sep void enterLhs concode_elem_sep void enterElement concode_elem_sep void exitRulelist concode_elem_sep void exitOptional concode_elem_sep void enterId concode_elem_sep void exitEveryRule concode_elem_sep void exitText concode_elem_sep void enterRulelist concode_elem_sep void exitRuleid concode_elem_sep void enterEveryRule concode_elem_sep void exitAlternative concode_elem_sep void exitLhs concode_elem_sep void enterZeroormore concode_elem_sep void exitElement concode_elem_sep void exitZeroormore concode_elem_sep void enterOptional concode_elem_sep void exitRhs concode_elem_sep void enterRule_ concode_elem_sep void visitErrorNode concode_elem_sep void enterOneormore concode_elem_sep void enterRuleid concode_elem_sep void visitTerminal concode_elem_sep void enterAlternative concode_elem_sep void enterAlternatives concode_elem_sep void exitId concode_elem_sep void enterText concode_elem_sep void enterRhs
target: void function ( @ NotNull bnfParser . AlternativesContext arg0 ) { }