Prefix for namespace "test" on document: ex
Prefix for namespace "test" on document fragment: null
Prefix for namespace "test" on comment node 0: ex
Prefix null on document: null
Prefix for absent namespace "no" on document: null
Prefix for namespace "def" on child: abc
Prefix null on child: null
Prefix for namespace "test" (in parent) on child: ex
Prefix for namespace "def" (from attribute "x") on child: abc
