Shapes.reduceDims is difficult to understand

I find the documentation opaque:

  /**
   * Reshapes the operand by reducing the shape to the specified axis.
   *
   * @param <T> the type of Operand
   * @param scope current scope
   * @param operand the operand
   * @param axis the axis
   * @return the reshaped operand
   */
  @Endpoint(name = "reduceDims")
  public static <T extends TType> Operand<T> reduceDims(
      Scope scope, Operand<T> operand, Operand<TInt32> axis) {

I had no success searching for a similar function in Python TensorFlow. So I read the code, but it is fairly complex to follow.

Shapes.reduceDims メソッドから始め、現在の Javadoc と実装を読みます。この操作を利用可能な TensorFlow の動作と比較し、reshape、axis、operand、結果の shape が理解できるようにドキュメントを更新します。読者が複雑なコードを追わずに reduceDims の動作を把握できれば完了です。