def build_stats_for_chain(self, build_chain_id):
        """Returns a list of Build tuples for all elements in the build chain.

        This method allows insight into the runtime of each configuratio inside the build chain.
        """
        json_form = self.__retrieve_as_json(self.build_chain_path % build_chain_id)
        builds = [{'build_id': build[u'id'], 'configuration_id': build[u'buildTypeId']} for build in json_form[u'build']]

        return [
            BuildStat(
                build['build_id'],
                build['configuration_id'],
                self.__build_duration_for_id(build['build_id']),
                self.__build_start_date_for_id(build['build_id']))
            for build in builds
        ]
Returns a list of Build tuples for all elements in the build chain.

        This method allows insight into the runtime of each configuratio inside the build chain.