The TagResource api call method does not seem to be available.  Get a 404 (NOT FOUND) when calling this method.
""" Get an existing event source mapping
        ---
        operationId: 'getEventSourceMapping'
        parameters:
            - name: 'request'
              in: body
    """
    mappings = event_source_mappings
    mappings = [m for m in mappings if mapping_uuid == m.get('UUID')]
    if len(mappings) == 0:
        return error_response('The resource you requested does not exist.', 404, error_type='ResourceNotFoundException')
    return jsonify(mappings[0])
@app.route('%s/event-source-mappings/' % PATH_ROOT, methods=['POST'])
def create_event_source_mapping():