@Override
  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    fieldName = DataSerializer.readString(in);
    fieldIndex = in.readInt();
    varLenFieldSeqId = in.readInt();
    type = DataSerializer.readEnum(FieldType.class, in);
    relativeOffset = in.readInt();
    vlfOffsetIndex = in.readInt();
    {
      byte bits = in.readByte();
      identityField = (bits & IDENTITY_BIT) != 0;
      deleted = (bits & DELETED_BIT) != 0;
    }
  }
Used by {@link PdxInstanceImpl#equals(Object)} to act as if it has a field whose value is
always the default.
geode-core/src/main/java/org/apache/geode/pdx/internal/PdxField.java