Error: Unrecognized option "scheme" under "nelmio_solarium.endpoints.another"

[royopa]

nelmio_solarium:
    endpoints:
        default:
            scheme: http
            host: 10.4.2.103
            port: 8983
            path: /solr
            core: sicde_1
            timeout: 5
        another:
            scheme: http
            host: 10.4.2.103
            port: 8983
            path: /solr
            core: sicde_2
            timeout: 5
    clients:
        default:
            endpoints: [default, another]

InvalidConfigurationException in ArrayNode.php line 309:
Unrecognized option "scheme" under "nelmio_solarium.endpoints.another"

[Seldaek]

This option was available on master only, I added a new 2.2.0 release now that contains support for scheme.