src/main/java/org/apache/datasketches/pig/hll/SketchToEstimateAndErrorBounds.java [63:75]:
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  public Schema outputSchema(final Schema input) {
    if (input == null) { return null; }
    try {
      final Schema tupleSchema = new Schema();
      tupleSchema.add(new Schema.FieldSchema("Estimate", DataType.DOUBLE));
      tupleSchema.add(new Schema.FieldSchema("LowerBound", DataType.DOUBLE));
      tupleSchema.add(new Schema.FieldSchema("UpperBound", DataType.DOUBLE));
      return new Schema(new Schema.FieldSchema(getSchemaName(this
          .getClass().getName().toLowerCase(), input), tupleSchema, DataType.TUPLE));
    } catch (final FrontendException e) {
      throw new RuntimeException(e);
    }
  }
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src/main/java/org/apache/datasketches/pig/cpc/GetEstimateAndErrorBounds.java [104:116]:
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  public Schema outputSchema(final Schema input) {
    if (input == null) { return null; }
    try {
      final Schema tupleSchema = new Schema();
      tupleSchema.add(new Schema.FieldSchema("Estimate", DataType.DOUBLE));
      tupleSchema.add(new Schema.FieldSchema("LowerBound", DataType.DOUBLE));
      tupleSchema.add(new Schema.FieldSchema("UpperBound", DataType.DOUBLE));
      return new Schema(new Schema.FieldSchema(getSchemaName(this
          .getClass().getName().toLowerCase(), input), tupleSchema, DataType.TUPLE));
    } catch (final FrontendException e) {
      throw new RuntimeException(e);
    }
  }
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