<?xml version="1.0" encoding="ISO-8859-1" ?> <!-- C.4 Schema Component Constraints: no-xmlns --> <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://foo" xmlns:foo="http://foo"> <element name="foo"> <complexType> <attribute name="xmlns" type="string" /> </complexType> </element> </schema>