def _do_copy_docs(source, target):
    """
    Does the actual doc-string copy described by ``copy_docs``.
    
    Parameters
    ----------
    source : `Any`
        The source object to copy it's doc-string from.
    target : `Any`
        The target object to copy it's doc-string to.
    
    Returns
    -------
    target : `Any`
        The target object.
    """
    target.__doc__ = source.__doc__
    return target