How to removenodes from Request/Response for assertion

import com.eviware.soapui.support.*
def soapmessage = '''<ns:basket xmlns:ns="http://example.com">
                    <ns:fruit>
                    <ns:name>banana</ns:name>
                          <ns:color>yellow</ns:color>
                         </ns:fruit>
                       <ns:fruit>
                          <ns:name>apple</ns:name>
                          <ns:color>green</ns:color>
                         </ns:fruit>
                       <ns:fruit>
                         <ns:name>strawberry</ns:name>
                          <ns:color>red</ns:color>
                         </ns:fruit>
                    </ns:basket>'''


def groovyUtils = new com.eviware.soapui.support.GroovyUtils( context )

def holder = new com.eviware.soapui.support.XmlHolder( soapmessage )
  //holder.namespaces["ns"] = "http://example.com"
  //holder.declareNamespace("ns", "http://example.com")

assert holder.getNodeValue("//ns:fruit[2]/ns:color[1]") == "green"

holder.removeDomNodes("//*:fruit[2]")

assert holder.getNodeValue("//ns:fruit[2]/ns:color[1]") == "red"
log.info "Done"