src/vs/workbench/services/extensions/common/rpcProtocol.ts/MessageIO/_arrayContainsBufferOrUndefined
class MessageIO:	private static _arrayContainsBufferOrUndefined(arr: any[]): boolean {
		for (let i = 0, len = arr.length; i < len; i++) {
			if (arr[i] instanceof VSBuffer) {
				return true;
			}
			if (typeof arr[i] === 'undefined') {
				return true;
			}
		}
		return false;
	}