code: public static void setXMLEntityExpansionLimit (@Nullable final String sEntityExpansionLimit)
    {
      SystemProperties.setPropertyValue (SYSTEM_PROPERTY_ENTITY_EXPANSION_LIMIT, sEntityExpansionLimit);
      SystemProperties.setPropertyValue (SYSTEM_PROPERTY_JDX_XML_ENTITY_EXPANSION_LIMIT, sEntityExpansionLimit);
      _onSystemPropertyChange ();
    }
docs: Limit the number of entity expansions.<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 sEntityExpansionLimit
  A positive integer as a String. Values &le; 0 are treated as no
  limit. <code>null</code> means the property is deleted