return false;
        }

        PreauthIntegrityNegotiateContext rpc = null;
        for ( NegotiateContextRequest rnc : req.getNegotiateContexts() ) {
            if ( rnc instanceof PreauthIntegrityNegotiateContext ) {
                rpc = (PreauthIntegrityNegotiateContext) rnc;
            }
        }
        if ( rpc == null ) {
            return false;
        }

        boolean valid = false;

  <mime-type type="application/reginfo+xml">
    <glob pattern="*.rif"/>
  </mime-type>
  <mime-type type="application/relax-ng-compact-syntax">
    <sub-class-of type="text/plain"/>
    <glob pattern="*.rnc"/>
  </mime-type>
  <mime-type type="application/remote-printing"/>
  <mime-type type="application/resource-lists+xml">
    <glob pattern="*.rl"/>
  </mime-type>