The TagResource api call method does not seem to be available.  Get a 404 (NOT FOUND) when calling this method.
""" Delete an event source mapping
        ---
        operationId: 'deleteEventSourceMapping'
    """
    if not mapping_uuid:
        return jsonify({})
    mapping = delete_event_source(mapping_uuid)
    return jsonify(mapping)
@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['POST'])
def publish_version(function):
    arn = func_arn(function)
    if arn not in arn_to_lambda:
        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')
    return jsonify(publish_new_function_version(arn))
@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['GET'])
def list_versions(function):
    arn = func_arn(function)
    if arn not in arn_to_lambda:
        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')