/** return true if this has an associated list object. */
protected static boolean hasList(SIPHeader sipHeader) {
if (sipHeader instanceof SIPHeaderList) return false;
else {
Class headerClass = sipHeader.getClass();
return headerListTable.get(headerClass) != null;
}
}
/** Return a list object for this header if it has an associated list object. */
protected static SIPHeaderList getList(SIPHeader sipHeader) {
if (!initialized) initializeListMap();
try {
Class headerClass = sipHeader.getClass();
Class listClass = (Class) headerListTable.get(headerClass);
return (SIPHeaderList) listClass.newInstance();
} catch (InstantiationException ex) {
InternalError.handleException(ex);
} catch (IllegalAccessException ex) {
InternalError.handleException(ex);
}
return null;
}