src/vs/workbench/api/common/extHostLanguageFeatures.ts/ExtHostLanguageFeatures/$provideCallHierarchyOutgoingCalls
class ExtHostLanguageFeatures:	$provideCallHierarchyOutgoingCalls(handle: number, sessionId: string, itemId: string, token: CancellationToken): Promise<extHostProtocol.IOutgoingCallDto[] | undefined> {
		return this._withAdapter(handle, CallHierarchyAdapter, adapter => adapter.provideCallsFrom(sessionId, itemId, token), undefined, token);
	}