def callable_accepts_kwargs(func: Callable) -> bool:
    """
    Checks if function accepts **kwargs.

    :param func: function which signature needs to be checked
    :type func: function
    :return: result of the check
    :rtype: bool
    """
    return any(
        p
        for p in inspect.signature(func).parameters.values()
        if p.kind == p.VAR_KEYWORD
    )

    Checks if function accepts **kwargs.

    :param func: function which signature needs to be checked
    :type func: function
    :return: result of the check
    :rtype: bool
    
ormar/signals/signal.py