forkable property
Forkable is NOT omitempty: false is an answer here, not a missing field. Omitted, a client could not tell "you cannot fork this" from "nobody said".
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
bool? forkable;