src/vs/workbench/contrib/preferences/browser/keybindingsEditor.ts/SourceColumnRenderer/renderTemplate
class SourceColumnRenderer:	renderTemplate(container: HTMLElement): ISourceColumnTemplateData {
		const sourceColumn = DOM.append(container, $('.source'));
		const highlightedLabel = new HighlightedLabel(sourceColumn, false);
		return { highlightedLabel };
	}