@NotNull
  private static PyFunction createInitMethod(@NotNull final PyClass to) {
    final PyFunctionBuilder functionBuilder = new PyFunctionBuilder(PyNames.INIT, to);
    functionBuilder.parameter(PyNames.CANONICAL_SELF); //TODO: Take param from codestyle?
    final PyFunction function = functionBuilder.buildFunction();
    return PyClassRefactoringUtil.addMethods(to, true, function).get(0);
  }
@NotNull
  private static PyFunction createInitMethod(@NotNull final PyClass to)