src/vs/workbench/api/common/extHostComments.ts/ExtHostCommentThread/getCommentByUniqueId
class ExtHostCommentThread:		getCommentByUniqueId(uniqueId: number): vscode.Comment | undefined {
			for (const key of this._commentsMap) {
				const comment = key[0];
				const id = key[1];
				if (uniqueId === id) {
					return comment;
				}
			}

			return;
		}