Fixed in https://github.com/telefonicaid/fiware-connectors/commit/c983c7a4216d670cf073402beab420811e664e08

Tests have been modied in https://github.com/telefonicaid/fiware-connectors/commit/6a8d5624de3298bc0dc3b4999eeede96f6748454

Documentation is modified accordingly in https://github.com/telefonicaid/fiware-connectors/commit/e62a29447ea690b9336435e14f7607b206f20c90 and https://github.com/telefonicaid/fiware-connectors/commit/4fda0974421fbc3dc6c596bf9482a057f3919a99