@Override
    protected ValueWriter<?> fixedWriter(int length) {
      return ValueWriters.fixedBuffers(length);
    }
A Writer that consumes Iceberg's internal in-memory object model.

<p>Iceberg's internal in-memory object model produces the types defined in {@link
Type.TypeID#javaClass()}.
iceberg/patched-iceberg-core/src/main/java/org/apache/iceberg/avro/InternalWriter.java