getRelationTable method
Returns TableColumnRelation for the given relationField. If no relation
exists, returns null. The return must be dynamic to allow for relations
with different id types.
Implementation
@override
_i1.Table? getRelationTable(String relationField) {
if (relationField == 'challenge') {
return challenge;
}
if (relationField == 'createAccountChallenge') {
return createAccountChallenge;
}
return null;
}