anchor.diff:    static int method() => 0;
     //         ^^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  -  // [cfe] unspecified
     static int get property => 1;
     //             ^^^^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  -  // [cfe] unspecified
     static void set property(int value) {}
     //              ^^^^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  -  // [cfe] unspecified
     static int get property2 => 1;
     //             ^^^^^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  -  // [cfe] unspecified
     static void set property3(int x) {}
     //              ^^^^^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  -  // [cfe] unspecified
     static int field = 3;
     //         ^^^^^
     // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
  
positive.code:   static int method() => 0;
    //         ^^^^^^
    // [analyzer] COMPILE_TIME_ERROR.EXTENSION_CONFLICTING_STATIC_AND_INSTANCE
    // [cfe] unspecified
    int get method => 1;
  }
  
  // Check a static method colliding with an instance setter.
  
negative.code: // Check a static method colliding with a static setter.
  extension E7 on int {
    static int method() => 0;
    //         ^^^^^^
    // [cfe] unspecified
    static void set method(int value) {}
    //              ^^^^^^
    // [analyzer] COMPILE_TIME_ERROR.DUPLICATE_DEFINITION
  