Defined in file macro.asn C++ class: CConstraint_choice Constraint-choice ::= CHOICE { string String-constraint , location Location-constraint , field Field-constraint , source Source-constraint , cdsgeneprot-qual CDSGeneProt-qual-constraint , cdsgeneprot-pseudo CDSGeneProt-pseudo-constraint , sequence Sequence-constraint , pub Publication-constraint , molinfo Molinfo-field-constraint , field-missing Field-type , translation Translation-constraint }