@Override
  public PdxInstanceFactory writeStringArray(String fieldName, String[] value) {
    writer.writeStringArray(fieldName, value);
    return this;
  }
PdxInstances created with this factory can never be deserialized but you can access their fields
just like any other pdx.
<p>
The current implementation of this interface is meant for internal use only. The way it defines a
PdxType is expensive since it can never figure out it is already defined without doing an
expensive check in the type registry. We should optimize this before making this a public
feature.
geode-core/src/main/java/org/apache/geode/pdx/internal/PdxInstanceFactoryImpl.java