src/streamlink/plugin/api/mapper.py
def map(self, key, func, *args, **kwargs):
        """Creates a key-function mapping.

        The return value from the function should be either
          - A tuple containing a name and stream
          - A iterator of tuples containing a name and stream

        Any extra arguments will be passed to the function.
        """
        self._map.append((key, partial(func, *args, **kwargs)))
def map(self, key, func, *args, **kwargs):
        self._map.append((key, partial(func, *args, **kwargs)))
def map ( self , key , func , * args , * * kwargs ) : self . _map . append ( ( key , partial ( func , * args , * * kwargs ) ) )
Creates a key-function mapping.

        The return value from the function should be either
          - A tuple containing a name and stream
          - A iterator of tuples containing a name and stream

        Any extra arguments will be passed to the function.
Creates a key - function mapping .