Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
class	Cocoa Controls	MBS MacCocoa Plugin	18.5	✅ Yes	❌ No	❌ No	❌ No	Desktop only

Function: An optional search-and-replace find interface inside a view, usually a scroll view.
Notes:
The class serves as a controller for the standard Cocoa find bar. The NSTextFinder class interacts heavily with a client object which supports the NSTextFinderClient protocol. The client object provides access to the content being searched and provides visual feedback for a search operation.
All menu items related to finding (Find…, Find Next, Find Previous, Use Selection for Find, etc.) should have the same action, performTextFinderAction:, which gets sent down the responder chain in the standard method.

see
https://developer.apple.com/documentation/appkit/nstextfinder