///
/// <summary> * create a new JMF with one Message Element of family <code>family</code> and type <code>typ</code>
/// * </summary>
/// * <param name="family"> the Message family - Query, Acknowledge, Command, Response, Registration or Signal </param>
/// * <param name="typ"> the messages @Type value, null if unknown </param>
/// * <returns> the newly created message </returns>
///
public static JDFJMF createJMF(JDFMessage.EnumFamily family, JDFMessage.EnumType typ)
{
if (family == null)
{
throw new JDFException("createJMF: creating undefined message family");
}
JDFJMF jmf = new JDFDoc(ElementName.JMF).getJMFRoot();
jmf.appendMessageElement(family, typ);
return(jmf);
}