[ NoAccessorMethod ]
[ Version ( deprecated = true , deprecated_since = "0.17.7" , since = "0.15.1" ) ]
public string developer_key { owned get; construct; }
Warning: developer_key is deprecated since 0.17.7.
The developer key your application has registered with the Freebase API.
Google Freebase has been permanently shut down.
For more information, see the <ulink type="http" url="https://developers.google.com/freebase/v1/how-tos/authorizing">online documentation</ulink>.