code: public static void setXMLMaxOccur (@Nullable final String sMaxOccur)
    {
      SystemProperties.setPropertyValue (SYSTEM_PROPERTY_MAX_OCCUR, sMaxOccur);
      SystemProperties.setPropertyValue (SYSTEM_PROPERTY_JDX_XML_MAX_OCCUR, sMaxOccur);
      _onSystemPropertyChange ();
    }
docs: Limit the number of content model nodes that may be created when building a
  grammar for a W3C XML Schema that contains maxOccurs attributes with values
  other than "unbounded".<br>
  This setting only takes effect if a parser with <b>explicitly</b> disabled
  "Secure processing" feature is used. Otherwise this setting has no effect!
  
  @param sMaxOccur
  A positive integer. Values &le; 0 are treated as no limit.
  <code>null</code> means the property is deleted.
  @since 8.6.2