docs: def create_column(self, name):
          """
          calls: `POST https://developer.github.com/v3/projects/columns/#create-a-project-column>`_
          :param name: string
          """
          assert isinstance(name, (str, unicode)), name
          post_parameters = {"name": name}
          import_header = {"Accept": Consts.mediaTypeProjectsPreview}
          headers, data = self._requester.requestJsonAndCheck(
              "POST",
              self.url + "/columns",
              headers=import_header,
              input=post_parameters
          )
          return github.ProjectColumn.ProjectColumn(self._requester, headers, data, completed=True)