This mediator is used to convert the resultset data for the MASSOCGPGP
table into it's logical manifestation in the logical CatalogGroup
noun. This mediator handles the /CatalogGroup/Association portion
of the noun.
Build the /CatalogGroup/Association portion of the CatalogGroup
noun, based on data contained in the result graph. If no association data
is found in the physical graph, then the logical noun is unchanged by this
aNoun - an Object for holding the Logial enity which is of type CatalogGroup,
to be populated by copying data from physical entity
aPhysicalEntity - an Object to hold the physical entity of type CatalogGroup which
contains the data that has to be populated in Logical Entity.