data->output_vio = TSVConnWrite(output_conn, contp, data->output_reader,
What is the relationship between TSVConnWrite and TSIOBufferWrite.
For example in handling a transformation if you have multiple calls to TSIOBufferWrite,
Should you keep track of all of the data written and then make a single call to TSVConnWrite?
Or should you call TSVConnWrite with the amount of data to be written just prior to each TSIOBufferWrite?