presto-main/src/main/java/io/prestosql/connector/informationschema/InformationSchemaMetadata.java/InformationSchemaMetadata/getTableMetadata
class InformationSchemaMetadata:    @Override
    public ConnectorTableMetadata getTableMetadata(ConnectorSession session, ConnectorTableHandle tableHandle)
    {
        InformationSchemaTableHandle informationSchemaTableHandle = (InformationSchemaTableHandle) tableHandle;
        return informationSchemaTableHandle.getTable().getTableMetadata();
    }