/**
  * Returns a message for the cases where an <code>Expression</code> remains
  * unhandled because the expression type is not supported.
  *
  * @param pExpressionType  The unsupported expression type.
  *
  * @return  A message that stated the unsupported expression.
  */
 public static String getUnsupportedExpressionTypeMessage(
     ExpressionType pExpressionType)
 {
     return UNMARSHALLER_MESSAGES.getResource(
         "UNSUPPORTED_EXPRESSION_TYPE",
         new String[] {pExpressionType.ToString()});
 }