XSLTC does not support the notion of default object 
  in <A href="extensions.html#ext-func-calls">class format namespace</A>. 
  When using instance methods, you should always specify the class instance as the first argument
  to the extension function.</P>
  <P>The following example shows you how to call constructors, static, and nonstatic functions,
  using different namespace formats:</P>

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