input: Write a python function to create an instance of the class ClassName with a given parameter and call some_method on it.
  assert isinstance(create_and_call_classname(10), ClassName)
  assert create_and_call_classname(20).some_method() is None
  assert create_and_call_classname('test').some_method() is None
output: def create_and_call_classname(param):
      instance = ClassName(param)
      instance.some_method()
      return instance