&& !xmlNs.containsKey("xs"))
schema._namespace(WellKnownNamespace.XML_SCHEMA,"xs");
schema.version("1.0");
if(uri.length()!=0)
schema.targetNamespace(uri);
// declare prefixes for them at this level, so that we can avoid redundant
// namespace declarations
for (Namespace ns : depends) {
schema._namespace(ns.uri);