presto-resource-group-managers/src/main/java/io/prestosql/plugin/resourcegroups/db/ResourceGroupsDao.java/ResourceGroupsDao/getResourceGroups
class ResourceGroupsDao:    @SqlQuery("SELECT resource_group_id, name, soft_memory_limit, max_queued, soft_concurrency_limit, " +
            "  hard_concurrency_limit, scheduling_policy, scheduling_weight, jmx_export, soft_cpu_limit, " +
            "  hard_cpu_limit, parent\n" +
            "FROM resource_groups\n" +
            "WHERE environment = :environment\n")
    @UseRowMapper(ResourceGroupSpecBuilder.Mapper.class)
    List<ResourceGroupSpecBuilder> getResourceGroups(@Bind("environment") String environment);