DataMemberAt
virtual DataMember* DataMemberAt(int32 index) const = 0;
virtual DataMember* DataMemberAt(int32 index) const;
DataMember* member = baseType->DataMemberAt(i);
DataMember* member = baseType->DataMemberAt(i);
member = messageType->DataMemberAt(i);
for (int32 i = 0; DataMember* member = fType->DataMemberAt(i); i++) {