first commit

lib/max_print_plus_platform_interface.dart

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+import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+
+import 'max_print_plus_method_channel.dart';
+
+abstract class MaxPrintPlusPlatform extends PlatformInterface {
+  /// Constructs a MaxPrintPlusPlatform.
+  MaxPrintPlusPlatform() : super(token: _token);
+
+  static final Object _token = Object();
+
+  static MaxPrintPlusPlatform _instance = MethodChannelMaxPrintPlus();
+
+  /// The default instance of [MaxPrintPlusPlatform] to use.
+  ///
+  /// Defaults to [MethodChannelMaxPrintPlus].
+  static MaxPrintPlusPlatform get instance => _instance;
+
+  /// Platform-specific implementations should set this with their own
+  /// platform-specific class that extends [MaxPrintPlusPlatform] when
+  /// they register themselves.
+  static set instance(MaxPrintPlusPlatform instance) {
+    PlatformInterface.verifyToken(instance, _token);
+    _instance = instance;
+  }
+
+  Future<String?> getPlatformVersion() {
+    throw UnimplementedError('platformVersion() has not been implemented.');
+  }
+}