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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def git_remote(self):
 """ If the distribution is installed via git, return the first URL of the 'origin' remote if one is configured for the repo, or else the first URL of the lexicographically-first remote, or else None. :return: origin or first remote URL :rtype: :py:obj:`str` or :py:data:`None` """

        if self._git_remotes is None or len(self._git_remotes) < 1:
            return None
        if 'origin' in self._git_remotes:
            return self._git_remotes['origin']
        k = sorted(self._git_remotes.keys())[0]
        return self._git_remotes[k]