src/vs/editor/browser/widget/codeEditorWidget.ts/CodeEditorWidget/removeContentWidget
class CodeEditorWidget:	public removeContentWidget(widget: editorBrowser.IContentWidget): void {
		const widgetId = widget.getId();
		if (this._contentWidgets.hasOwnProperty(widgetId)) {
			const widgetData = this._contentWidgets[widgetId];
			delete this._contentWidgets[widgetId];
			if (this._modelData && this._modelData.hasRealView) {
				this._modelData.view.removeContentWidget(widgetData);
			}
		}
	}