code: public static <T> String toXmlWithXStream(final T objectToXML,
  		final Map<String, Class<?>> aliases)
  	{
  		return toXmlWithXStream(null, objectToXML, aliases);
  	}
docs: Creates from the given Object an xml string. The given map hold the aliases. For more
  information with aliasing see documation of xstream.
  
  @param <T>
  the generic type of the object that will be transformed to xml
  @param objectToXML
  the object to xml
  @param aliases
  the aliases
  @return the xml string