If I have a class like

@Name("test")
class MyComponent {

}

<?xml version="1.0"?>
<!DOCTYPE components PUBLIC "-//JBoss/Seam Component Configuration DTD 1.1//EN"
"http://jboss.com/products/seam/components-1.1.dtd">
<components>
<component class="MyComponent" name="anotherName"/>
</components>

then "anotherName" does not show up in codecompletion but it does show up in the seam components view.