public String getOrderFieldName () {
        String name = fields[1].name;
        if (name.contains("_sequence") || compoundKey) return name;
        else return null;
    }
public String getOrderFieldName () {
        String name = fields[1].name;
        if (name.contains("_sequence") || compoundKey) return name;
        else return null;
    }
public String getOrderFieldName ( ) { String name = fields [ 1 ] . name ; if ( name . contains ( "_sequence" ) || compoundKey ) return name ; else return null ; }
Returns field name that defines order for grouped entities or that defines the compound key field (e.g.,
transfers#to_stop_id). WARNING: this field must be in the 1st position (base zero) of the fields array; hence,
this MUST be called on a spec table (i.e., one of the constant tables defined in this class). Otherwise, it could
return null even if the table has an order field defined.
Returns field name that defines order for grouped entities or that defines the compound key field ( e . g . transfers#to_stop_id ) . WARNING : this field must be in the 1st position ( base zero ) of the fields array ; hence this MUST be called on a spec table ( i . e . one of the constant tables defined in this class ) . Otherwise it could return null even if the table has an order field defined .