Unused namespace prefix warning

[apb2006]

How many warnings in?

declare namespace ns = "http://example.com";
import module namespace ns2 = "http://example.com";
1

Test says 2 https://github.com/Quodatum/xqlint/blob/b90e320c37e90b3cffbf36da4b87f02f8c36e150/test/namespace_test.js#L40-L46 But there is no code to detect unused prefix, only unused module.