code: def __call__(self, *args, **kwargs):
      if args:
          raise TypeError(
              "hook calling supports only keyword arguments"
          )
      assert not self.is_historic()
      if self.spec and self.spec.argnames:
          notincall = (
              set(self.spec.argnames)
              - set(["__multicall__"])
              - set(kwargs.keys())
          )
          if notincall:
              warnings.warn(
                  "Argument(s) {} which are declared in the hookspec "
                  "can not be found in this hook call".format(
                      tuple(notincall)
                  ),
                  stacklevel=2,
              )
      return self._hookexec(self, self.get_hookimpls(), kwargs)
  
imports: import inspect
  import sys
  import warnings
  from .callers import _legacymulticall, _multicall
label_desc: Use image node_id 9 for calling the _HookCaller obj's underlying member method code with example usage: obj.__call__() and returns: self