* @see SipServletMessage#getParameterableHeaders(String)
*/
public ListIterator<? extends Parameterable> getParameterableHeaders(String name) throws ServletParseException
{
Buffer buffer = SipHeaders.CACHE.lookup(name);
HeaderInfo hi = SipHeaders.getType(buffer);
if (hi.getType() != HeaderInfo.PARAMETERABLE && hi.getType() != HeaderInfo.ADDRESS && hi.getOrdinal() != -1)
throw new ServletParseException("Header: " + name + " is not of parametrable type");
ListIterator<Parameterable> it = getFields().getParameterableValues(buffer);
if (isSystemHeader(hi) || isCommitted())