src/main/java/org/apache/datasketches/pig/tuple/UnionArrayOfDoublesSketch.java [54:74]:
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  @Override
  public String getInitial() {
    return Initial.class.getName();
  }

  @Override
  public String getIntermed() {
    return IntermediateFinal.class.getName();
  }

  @Override
  public String getFinal() {
    return IntermediateFinal.class.getName();
  }

  public static class Initial extends AlgebraicInitial {

    /**
     * Constructor for the initial pass of an Algebraic function using default parameters.
     */
    public Initial() {}
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src/main/java/org/apache/datasketches/pig/tuple/UnionDoubleSummarySketch.java [62:82]:
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  @Override
  public String getInitial() {
    return Initial.class.getName();
  }

  @Override
  public String getIntermed() {
    return IntermediateFinal.class.getName();
  }

  @Override
  public String getFinal() {
    return IntermediateFinal.class.getName();
  }

  public static class Initial extends AlgebraicInitial {
    /**
     * Constructor for the initial pass of an Algebraic function.
     * Default sketch size and default mode.
     */
    public Initial() {}
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