gobblin-modules/gobblin-parquet/src/main/java/org/apache/gobblin/converter/parquet/ParquetGroup.java [115:124]:
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  public void add(int fieldIndex, Primitive value) {
    Type type = this.schema.getType(fieldIndex);
    List<Object> list = this.data[fieldIndex];
    if (!type.isRepetition(REPEATED) && !list.isEmpty()) {
      throw new IllegalStateException(
          "field " + fieldIndex + " (" + type.getName() + ") can not have more than one value: " + list);
    } else {
      list.add(value);
    }
  }
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gobblin-modules/gobblin-parquet-apache/src/main/java/org/apache/gobblin/converter/parquet/ParquetGroup.java [114:123]:
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  public void add(int fieldIndex, Primitive value) {
    Type type = this.schema.getType(fieldIndex);
    List<Object> list = this.data[fieldIndex];
    if (!type.isRepetition(REPEATED) && !list.isEmpty()) {
      throw new IllegalStateException(
          "field " + fieldIndex + " (" + type.getName() + ") can not have more than one value: " + list);
    } else {
      list.add(value);
    }
  }
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