src/vs/workbench/api/common/extHostCodeInsets.ts/ExtHostEditorInsets/$onDidReceiveMessage
class ExtHostEditorInsets:	$onDidReceiveMessage(handle: number, message: any): void {
		const value = this._insets.get(handle);
		if (value) {
			value.onDidReceiveMessage.fire(message);
		}
	}