src/vs/editor/contrib/gotoSymbol/link/goToDefinitionAtPosition.ts/GotoDefinitionAtPositionEditorContribution/isInPeekEditor
class GotoDefinitionAtPositionEditorContribution:	private isInPeekEditor(accessor: ServicesAccessor): boolean | undefined {
		const contextKeyService = accessor.get(IContextKeyService);
		return PeekContext.inPeekEditor.getValue(contextKeyService);
	}