It would be nice to have JAXB generate classes from the schema currently in the
editor.  The IDE should prompt for a package name if there are multiple source
packages defined, otherwise default to the project source package (or try to
grok one from the target namespace) with ".generated" appended.  There would
have to be some cleverness involved with maintaining the ObjectFactory class, as
JAXB creates a new one for each schema, which would prevent the use of multiple
schema files.  If that's too difficult, then restricting to one schema per
package is OK.