unnecessary_overrides

Unnecessary override.

The analyzer produces this diagnostic when an instance member overrides an inherited member but only invokes the overridden member with exactly the same arguments.

The following code produces this diagnostic because the method D.m doesn't do anything other than invoke the overridden method:

class C {
  int m(int x) => x;
}

class D extends C {
  @override
  int m(int x) => super.m(x);
}

If the method should do something more than what the overridden method does, then implement the missing functionality:

class C {
  int m(int x) => x;
}

class D extends C {
  @override
  int m(int x) => super.m(x) + 1;
}

If the overridden method should be modified by changing the return type or one or more of the parameter types, making one of the parameters covariant, having a documentation comment, or by having additional annotations, then update the code:

import 'package:meta/meta.dart';

class C {
  int m(int x) => x;
}

class D extends C {
  @mustCallSuper
  @override
  int m(int x) => super.m(x);
}

If the overriding method doesn't change or enhance the semantics of the code, then remove it:

class C {
  int m(int x) => x;
}

class D extends C {}

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