9d59e00e_Beans_1_0_4_rc1_Documentation___To_specify_this
[Use this method] XmlOptions.setUseDefaultNamespace() [To specify this] 
To reduce the size of the saved document by allowing the use of the default namespace. Note that this can potentially change the semantic meaning of the XML if unprefixed QNames are present as the value of an attribute or element.
XmlTokenSource (XMLBeans 1.0.4-rc1 Documentation)
To specify this