def trailers_dict(self) -> Dict[str, List[str]]:
        """Get the trailers of the message as a dictionary.

        Git messages can contain trailer information that are similar to :rfc:`822`
        e-mail headers. See :manpage:`git-interpret-trailers(1)`.

        This function calls ``git interpret-trailers --parse`` onto the message to
        extract the trailer information. The key value pairs are stripped of leading and
        trailing whitespaces before they get saved into a dictionary.

        Valid message with trailer::

            Subject line

            some body information

            another information

            key1: value1.1
            key1: value1.2
            key2 :    value 2 with inner spaces

        Returned dictionary will look like this::

            {
                "key1": ["value1.1", "value1.2"],
                "key2": ["value 2 with inner spaces"],
            }


        :return:
            Dictionary containing whitespace stripped trailer information, mapping
            trailer keys to a list of their corresponding values.
        """
        d = defaultdict(list)
        for key, val in self.trailers_list:
            d[key].append(val)
        return dict(d)
Get the trailers of the message as a dictionary.

        Git messages can contain trailer information that are similar to :rfc:`822`
        e-mail headers. See :manpage:`git-interpret-trailers(1)`.

        This function calls ``git interpret-trailers --parse`` onto the message to
        extract the trailer information. The key value pairs are stripped of leading and
        trailing whitespaces before they get saved into a dictionary.

        Valid message with trailer::

            Subject line

            some body information

            another information

            key1: value1.1
            key1: value1.2
            key2 :    value 2 with inner spaces

        Returned dictionary will look like this::

            {
                "key1": ["value1.1", "value1.2"],
                "key2": ["value 2 with inner spaces"],
            }


        :return:
            Dictionary containing whitespace stripped trailer information, mapping
            trailer keys to a list of their corresponding values.
        
git/objects/commit.py