src/vs/workbench/api/common/extHostComments.ts/ExtHostCommentThread/state
class ExtHostCommentThread:		set state(newState: vscode.CommentThreadState) {
			checkProposedApiEnabled(this.extensionDescription, 'commentsResolvedState');
			this._state = newState;
			this.modifications.state = newState;
			this._onDidUpdateCommentThread.fire();
		}