fix for [ERROR:flutter/shell/common/shell.cc(93)] Dart Error: Dart_LookupLibrary: library 'package:untitled/location_callback_handler.dart' not found. By adding @pragma('vm:entry-point') before a class/ function, we let compiler know that the native code can access it
fix for [ERROR:flutter/shell/common/shell.cc(93)] Dart Error: Dart_LookupLibrary: library 'package:untitled/location_callback_handler.dart' not found. By adding @pragma('vm:entry-point') before a class/ function, we let compiler know that the native code can access it