private static List getParameters(PFeatureCallParameters callParameters)
{
List parameters = new ArrayList();
if (callParameters != null)
{
PActualParameterList parameterList = ((AFeatureCallParameters)callParameters).getActualParameterList();
if (parameterList != null)
{
AActualParameterList params = (AActualParameterList)parameterList;
// add the first param if it exists