src/vs/workbench/contrib/preferences/browser/preferencesEditor.ts/SideBySidePreferencesWidget/clearInput
class SideBySidePreferencesWidget:	clearInput(): void {
		if (this.defaultPreferencesEditor) {
			this.defaultPreferencesEditor.clearInput();
		}
		if (this.editablePreferencesEditor) {
			this.editablePreferencesEditor.clearInput();
		}
	}