src/vs/workbench/api/common/extHostLanguageFeatures.ts/ExtHostLanguageFeatures/$provideTypeDefinition
class ExtHostLanguageFeatures:	$provideTypeDefinition(handle: number, resource: UriComponents, position: IPosition, token: CancellationToken): Promise<languages.LocationLink[]> {
		return this._withAdapter(handle, TypeDefinitionAdapter, adapter => adapter.provideTypeDefinition(URI.revive(resource), position, token), [], token);
	}