title: How to tell JAXB to add noNameSpaceSchemaLocation attribute
body: <p>i have a certain class hierarchic which is transformed to XML using JAXB.
  i want the created XML to have the xsi:noNamespaceSchemaLocation and xmls:xsi attributes in the head element ( xsi:noNamespaceSchemaLocation="Something.xsd"  xmls:xsi="http://www.w3.org/2001/XMLSchema-instance").
  i dont want JAXB do use the schema in any way - just store these attributes and the values.</p>
  
  <p>is there a specific annotation for this? i could create just a constant XmlAttribute but it seems wrong...</p>
  
  <p>thanks</p>