docs: def load_commands_from_entry_point(self, specifier):
          """
          Load commands defined within a pkg_resources entry point.
  
          Each entry will be a module that should be searched for functions
          decorated with the :func:`subparse.command` decorator. This
          operation is not recursive.
  
          """
          for ep in pkg_resources.iter_entry_points(specifier):
              module = ep.load()
              command.discover_and_call(module, self.command)