presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraMetadata.java/CassandraMetadata/getTableMetadata
class CassandraMetadata:    private ConnectorTableMetadata getTableMetadata(SchemaTableName tableName)
    {
        CassandraTable table = cassandraSession.getTable(tableName);
        List<ColumnMetadata> columns = table.getColumns().stream()
                .map(CassandraColumnHandle::getColumnMetadata)
                .collect(toList());
        return new ConnectorTableMetadata(tableName, columns);
    }