presto-local-file/src/main/java/io/prestosql/plugin/localfile/LocalFileMetadata.java/LocalFileMetadata/getTableMetadata
class LocalFileMetadata:    @Override
    public ConnectorTableMetadata getTableMetadata(ConnectorSession session, ConnectorTableHandle table)
    {
        LocalFileTableHandle tableHandle = (LocalFileTableHandle) table;
        return new ConnectorTableMetadata(tableHandle.getSchemaTableName(), localFileTables.getColumns(tableHandle));
    }