src/vs/workbench/contrib/comments/browser/commentsEditorContribution.ts/CommentingRangeDecoration/constructor
class CommentingRangeDecoration:	constructor(private _editor: ICodeEditor, private _ownerId: string, private _extensionId: string | undefined, private _label: string | undefined, private _range: IRange, commentingOptions: ModelDecorationOptions, private commentingRangesInfo: modes.CommentingRanges) {
		const startLineNumber = _range.startLineNumber;
		const endLineNumber = _range.endLineNumber;
		let commentingRangeDecorations = [{
			range: {
				startLineNumber: startLineNumber, startColumn: 1,
				endLineNumber: endLineNumber, endColumn: 1
			},
			options: commentingOptions
		}];

		this._decorationId = this._editor.deltaDecorations([], commentingRangeDecorations)[0];
	}