     forKey key: Key
   ) -> UnkeyedEncodingContainer
 
-  /// Stores a new nested container for the default `super` key and returns A
+  /// Stores a new nested container for the default `super` key and returns a
   /// new encoder instance for encoding `super` into that container.
   ///
   /// Equivalent to calling `superEncoder(forKey:)` with

    return _box.nestedUnkeyedContainer(forKey: key)
  }

  /// Stores a new nested container for the default `super` key and returns A
  /// new encoder instance for encoding `super` into that container.
  ///
  /// Equivalent to calling `superEncoder(forKey:)` with

    return _box.superEncoder()
  }

  /// Stores a new nested container for the given key and returns a new encoder
  /// instance for encoding `super` into that container.
  ///
  /// - parameter key: The key to encode `super` for.
