Defined in file omssa.asn
No C++ class for INTEGER with named values
MSIonType ::= INTEGER {
a (0),
b (1),
c (2),
x (3),
y (4),
z (5), -- actually zdot
parent(6),
internal(7),
immonium(8),
unknown(9),
adot (10),
x-CO2 (11),
adot-CO2 (12),
max (13)
}