 are 2-tuples of key/value pairs, as
        split on the `=' sign.  The left hand side of the `=' is the key,
        while the right hand side is the value.  If there is no `=' sign in
        the parameter the value is the empty string.  The value is as
        described in the get_param() method.

        Optional failobj is the object to return if there is no Content-Type
        header.  Optional header is the header to search instead of
        Content-Type.  If unquote is True, the value is unquoted.
        c