This attribute represents a MoML parser.
If it is present in an entity that is the context for a MoMLChangeRequest,
then that change request will use it to parse the changes.
It is not a persistent attribute (exportMoML() writes nothing).
It is a singleton, meaning that if it is inserted into a container
that already contains a singleton attribute with the same name,
then it will replace the previous attribute.
<p>
By default, this attribute is not persistent, so it will not
be present in a MoML representation of its container.
Edward A. Lee
$Id: ParserAttribute.java 70398 2014-10-22 23:44:32Z cxh $
Ptolemy II 1.0
Red (eal)
Red (reviewmoderator)