How to use the grlc.utils function in grlc

def build_spec(user, repo, sha=None, prov=None, extraMetadata=[]):
    """Build grlc specification for the given github user / repo."""
    loader = grlc.utils.getLoader(user, repo, sha=sha, prov=prov)

    files = loader.fetchFiles()
    raw_repo_uri = loader.getRawRepoUri()

    # Fetch all .rq files
    items = []

    allowed_ext = ["rq", "sparql", "json", "tpf"]
    for c in files:
        glogger.debug('>>>>>>>>>>>>>>>>>>>>>>>>>c_name: {}'.format(c['name']))
        extension = c['name'].split('.')[-1]
        if extension in allowed_ext:
            call_name = c['name'].split('.')[0]

            # Retrieve extra metadata from the query decorators
            query_text = loader.getTextFor(c)

def swagger_spec(user, repo, sha=None, content=None):
    glogger.info("-----> Generating swagger spec for /{}/{} on commit {}".format(user, repo, sha))

    swag = utils.build_swagger_spec(user, repo, sha, static.SERVER_NAME)

    if 'text/turtle' in request.headers['Accept']:
        resp_spec = make_response(utils.turtleize(swag))
        resp_spec.headers['Content-Type'] = 'text/turtle'
    else:
        resp_spec = make_response(jsonify(swag))
        resp_spec.headers['Content-Type'] = 'application/json'

    resp_spec.headers['Cache-Control'] = static.CACHE_CONTROL_POLICY  # Caching JSON specs for 15 minutes

    glogger.info("-----> API spec generation for /{}/{} on commit {} complete".format(user, repo, sha))
    return resp_spec

def swagger_spec(user, repo, sha=None, content=None):
    glogger.info("-----> Generating swagger spec for /{}/{} on commit {}".format(user, repo, sha))

    swag = utils.build_swagger_spec(user, repo, sha, static.SERVER_NAME)

    if 'text/turtle' in request.headers['Accept']:
        resp_spec = make_response(utils.turtleize(swag))
        resp_spec.headers['Content-Type'] = 'text/turtle'
    else:
        resp_spec = make_response(jsonify(swag))
        resp_spec.headers['Content-Type'] = 'application/json'

    resp_spec.headers['Cache-Control'] = static.CACHE_CONTROL_POLICY  # Caching JSON specs for 15 minutes

    glogger.info("-----> API spec generation for /{}/{} on commit {} complete".format(user, repo, sha))
    return resp_spec