A Table Group class is the collection container object used to access and
create table groups. Like the table class, table group classes are
generated in pairs, a row class and a collection class.
The naming convention for table group classes is
<prefix>TblGrp<message name><group name>
for the collection object, and
<prefix>TblGrp<message name><group name>Row
for the row object. For example, if you had a table
group named "Insurance" in a
message called "Admit" and picked the prefix "HL7", the classes
generated would be
HL7TblGrpAdmitInsurance
and HL7TblGrpAdmitInsuranceRow.