code: def abstractmethod(funcobj):
      """A decorator indicating abstract methods.
  
      Requires that the metaclass is ABCMeta or derived from it.  A
      class that has a metaclass derived from ABCMeta cannot be
      instantiated unless all of its abstract methods are overridden.
      The abstract methods can be called using any of the normal
      'super' call mechanisms.  abstractmethod() may be used to declare
      abstract methods for properties and descriptors.
  
      Usage:
  
          class C(metaclass=ABCMeta):
              @abstractmethod
              def my_abstract_method(self, arg1, arg2, argN):
                  ...
      """
      funcobj.__isabstractmethod__ = True
      return funcobj
  
file_path: cpython/Lib/abc.py
label_desc: Use image node_id 1 for calling a global function with example usage: abstractmethod(funcobj) and returns: funcobj