docs: def get_changelog(self, project, repository, ref_from, ref_to, limit=99999):
          """
          Get change log between 2 refs
          :param project:
          :param repository:
          :param ref_from:
          :param ref_to:
          :param limit: OPTIONAL: The limit of the number of changes to return, this may be restricted by
                  fixed system limits. Default by built-in method: 99999
          :return:
          """
          url = 'rest/api/1.0/projects/{project}/repos/{repository}/compare/commits'.format(project=project,
                                                                                            repository=repository)
          params = {}
          if ref_from:
              params['from'] = ref_from
          if ref_to:
              params['to'] = ref_to
          if limit:
              params['limit'] = limit
          return (self.get(url, params=params) or {}).get('values')