<CoProcessingWriters>
  <Writer proxyname="XMLPImageDataWriter" proxygroup="filters" />
  <Writer proxyname="XMLPRectilinearGridWriter" proxygroup="filters" />
  <Writer proxyname="XMLPStructuredGridWriter" proxygroup="filters" />
  <Writer proxyname="XMLPPolyDataWriter" proxygroup="filters" />
  <Writer proxyname="XMLPUnstructuredGridWriter" proxygroup="filters" />
  <Writer proxyname="XMLMultiBlockDataWriter" proxygroup="filters" />
  <Writer proxyname="XMLHierarchicalBoxDataWriter" proxygroup="filters" />
</CoProcessingWriters>
