PreparedStatement's setFetchSize() is mainly used in two ways in Hibernate:

• set by `hibernate.jdbc.fetch_size` property
• set by QueryOptions's getFetchSize()

We could set aggregate command's `cursor.batchSize` field.

More research is required to sort out all the details.

Given QueryOption is not involved in m1, we have no way to go about integration test, so exclude this feature out of m1.

Addressing the source code notes tagged with TODO-HIBERNATE-54 is in scope of this ticket.