src/vs/workbench/api/browser/mainThreadComments.ts/MainThreadCommentController/updateInput
class MainThreadCommentController:	updateInput(input: string) {
		let thread = this.activeCommentThread;

		if (thread && thread.input) {
			let commentInput = thread.input;
			commentInput.value = input;
			thread.input = commentInput;
		}
	}