1<!-- 2http://www.w3.org/TR/xmldsig2ed-tests/#c14n11xmlbase-prop-2 3 4Check that implementations of [XML-C14N1.1] properly build the xml:base 5at the first level (ietf:e1). 6--> 7<XPath xmlns:ietf="http://www.ietf.org" > 8(//. | //@* | //namespace::*) 9[ancestor-or-self::ietf:e1] 10</XPath> 11