src/vs/editor/browser/controller/mouseTarget.ts/HitTestRequest/fulfillMargin
class HitTestRequest:	public fulfillMargin(type: MouseTargetType.GUTTER_GLYPH_MARGIN | MouseTargetType.GUTTER_LINE_NUMBERS | MouseTargetType.GUTTER_LINE_DECORATIONS, position: Position, range: EditorRange, detail: IMouseTargetMarginData): IMouseTargetMargin {
		return MouseTarget.createMargin(type, this.target, this._getMouseColumn(position), position, range, detail);
	}