presto-main/src/main/java/io/prestosql/connector/informationschema/InformationSchemaPageSource.java/InformationSchemaPageSource/addEnabledRolesRecords
class InformationSchemaPageSource:    private void addEnabledRolesRecords()
    {
        for (String role : metadata.listEnabledRoles(session, catalogName)) {
            addRecord(role);
            if (isLimitExhausted()) {
                return;
            }
        }
    }