examples/example_apple_metal/Shared/AppDelegate.m - third_party/imgui - Git at Google

 #import "AppDelegate.h"

 @implementation AppDelegate

 #if TARGET_OS_OSX
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
     return YES;
 }
 #endif

 @end
	#import "AppDelegate.h"

	@implementation AppDelegate

	#if TARGET_OS_OSX
	- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
	return YES;
	}
	#endif

	@end