public Stream<T> mapAll(PsiMethodCallExpression call) {
    if (call == null) return null;
    List<CallHandler<T>> functions = myMap.get(call.getMethodExpression().getReferenceName());
    if (functions == null) return StreamEx.empty();
    return StreamEx.of(functions).map(fn -> fn.apply(call)).nonNull();
  }
public Stream<T> mapAll(PsiMethodCallExpression call)