the schema is externally available but the location is
 unspecified (and thus it's the responsibility of the reader of the generate
 schema to locate it.) Finally, the default value of this property
 <code>"##generate"</code> indicates that the schema generator is going
 to generate components for this namespace (as it did in JAXB 2.0.)

 <p>
 Multiple <a href="XmlSchema.html" title="annotation in javax.xml.bind.annotation"><code>XmlSchema</code></a> annotations on multiple packages are allowed
 to govern t