docs: def delete_file(self, path, message, sha,
                      branch=github.GithubObject.NotSet,
                      committer=github.GithubObject.NotSet,
                      author=github.GithubObject.NotSet):
          """This method deletes a file in a repository
  
          :calls: `DELETE /repos/:owner/:repo/contents/:path <https://developer.github.com/v3/repos/contents/#delete-a-file>`_
          :param path: string, Required. The content path.
          :param message: string, Required. The commit message.
          :param sha: string, Required. The blob SHA of the file being replaced.
          :param branch: string. The branch name. Default: the repository’s default branch (usually master)
          :param committer: InputGitAuthor, (optional), if no information is given the authenticated user's information will be used. You must specify both a name and email.
          :param author: InputGitAuthor, (optional), if omitted this will be filled in with committer information. If passed, you must specify both a name and email.
          :rtype: {
              'content': :class:`null <github.GithubObject.NotSet>`:,
              'commit': :class:`Commit <github.Commit.Commit>`}
          """
          assert isinstance(path, (str, unicode)),                   \
              'path must be str/unicode object'
          assert isinstance(message, (str, unicode)),                \
              'message must be str/unicode object'
          assert isinstance(sha, (str, unicode)),                    \
              'sha must be a str/unicode object'
          assert branch is github.GithubObject.NotSet                \
              or isinstance(branch, (str, unicode)),                 \
              'branch must be a str/unicode object'
          assert author is github.GithubObject.NotSet                \
              or isinstance(author, github.InputGitAuthor),          \
              'author must be a github.InputGitAuthor object'
          assert committer is github.GithubObject.NotSet             \
              or isinstance(committer, github.InputGitAuthor),       \
              'committer must be a github.InputGitAuthor object'
  
          url_parameters = {'message': message, 'sha': sha}
          if branch is not github.GithubObject.NotSet:
              url_parameters['branch'] = branch
          if author is not github.GithubObject.NotSet:
              url_parameters["author"] = author._identity
          if committer is not github.GithubObject.NotSet:
              url_parameters["committer"] = committer._identity
  
          headers, data = self._requester.requestJsonAndCheck(
              "DELETE",
              self.url + "/contents/" + urllib.quote(path),
              input=url_parameters
          )
  
          return {'commit': github.Commit.Commit(self._requester, headers, data["commit"], completed=True),
                  'content': github.GithubObject.NotSet}