The QName prefix namespace map stores a prefix as the keys and namespace Uri as the values. This QName prefix namespace map is stored on the root XSDSchema object and is used when XSDNamedComponents need to be resolved.

If you want to add additional prefix-namespace pairs to a given XML Schema file, you can do the following:

//Add additional prefix-namespace pair xmlns:address="http://www.eclipse.org/xsd/examples/address"
qNamePrefixToNamespaceMap.put("address","http://www.eclipse.org/xsd/examples/address");

The above code snippet produces the following serialized XML Schema model:

<?xml version="1.0"?>
<schema targetNamespace="http://www.eclipse.org/xsd/examples/createxsd"
    xmlns="http://www.w3.org/2001/XMLSchema"
    xmlns:address="http://www.eclipse.org/xsd/examples/address" 
    xmlns:createxsd="http://www.eclipse.org/xsd/examples/createxsd"/>