return false;
        }

        PreauthIntegrityNegotiateContext rpc = null;
        for (final 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>