Since 3.6.0

Fields

@:optionaloptionallinkSupport:Null<Bool>

The client supports additional metadata in the form of definition links.

Since 3.14.0

@:optionaloptionaldynamicRegistration:Null<Bool>

Whether implementation supports dynamic registration. If this is set to true the client supports the new TypeDefinitionRegistrationOptions return value for the corresponding server capability as well.