src/vs/workbench/contrib/comments/browser/commentGlyphWidget.ts/CommentGlyphWidget/setLineNumber
class CommentGlyphWidget:	setLineNumber(lineNumber: number): void {
		this._lineNumber = lineNumber;
		let commentsDecorations = [{
			range: {
				startLineNumber: lineNumber, startColumn: 1,
				endLineNumber: lineNumber, endColumn: 1
			},
			options: this._commentsOptions
		}];

		this.commentsDecorations = this._editor.deltaDecorations(this.commentsDecorations, commentsDecorations);
	}