presto-main/src/main/java/io/prestosql/metadata/CatalogMetadata.java/CatalogMetadata/getConnectorId
class CatalogMetadata:    public CatalogName getConnectorId(Session session, QualifiedObjectName table)
    {
        if (table.getSchemaName().equals(INFORMATION_SCHEMA_NAME)) {
            return informationSchemaId;
        }

        if (systemTables.getTableHandle(session.toConnectorSession(systemTablesId), table.asSchemaTableName()) != null) {
            return systemTablesId;
        }

        return catalogName;
    }