presto-main/src/main/java/io/prestosql/connector/system/StaticSystemTablesProvider.java/StaticSystemTablesProvider/StaticSystemTablesProvider
class StaticSystemTablesProvider:    public StaticSystemTablesProvider(Set<SystemTable> systemTables)
    {
        this.systemTables = ImmutableSet.copyOf(systemTables);
        this.systemTablesMap = systemTables.stream()
                .collect(toImmutableMap(
                        table -> table.getTableMetadata().getTable(),
                        identity()));
    }