######################################################################
# A complex repository that lazily constructs jobs from a directory
# of files in a bespoke YAML format
######################################################################

class ComplexRepositoryData(RepositoryData):
    def __init__(self, yaml_directory):
        self._yaml_directory = yaml_directory

    def get_all_pipelines(self):
        return [
            self._construct_job_def_from_yaml_file(
              self._yaml_file_for_job_name(file_name)
            )
            for file_name in os.listdir(self._yaml_directory)
        ]

    ...

@repository
def complex_repository():
    return ComplexRepositoryData('some_directory')