
derived: 
a: a
x: foo
q1: 1
y: -20
p: bar
q2: 2
default x: foo
default y: -20
fixed p: bar
fixed q1: 1
fixed q2: 2
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<t:root xmlns:t="test">
  <derived q1="1" q2="2">
    <a>a</a>
  </derived>
</t:root>
