presto-main/src/main/java/io/prestosql/metadata/CatalogMetadata.java/CatalogMetadata/getMetadataFor
class CatalogMetadata:    public ConnectorMetadata getMetadataFor(CatalogName catalogName)
    {
        if (catalogName.equals(this.catalogName)) {
            return metadata;
        }
        if (catalogName.equals(informationSchemaId)) {
            return informationSchema;
        }
        if (catalogName.equals(systemTablesId)) {
            return systemTables;
        }
        throw new IllegalArgumentException("Unknown connector id: " + catalogName);
    }