C++ Namespaces
If the schema has a target namespace and a prefix associated with the target namespace URI, then a C++ namespace that matches the prefix is used. Note that, in the provided po1_main.cpp sample application, HydraExpress includes the C++ types that HydraExpress created from the po namespace:
using namespace po;
For more information about C++ namespaces in code generated by HydraExpress, see Namespaces.