presto-atop/src/main/java/io/prestosql/plugin/atop/AtopTable.java/AtopTable/AtopTable
class AtopTable:    AtopTable(String name, String atopLabel, List<AtopColumn> columns)
    {
        this.atopLabel = atopLabel;
        this.name = requireNonNull(name, "name is null");
        this.columns = ImmutableList.copyOf(requireNonNull(columns, "columns is null"));
        columnIndex = this.columns.stream().collect(Collectors.toMap(AtopColumn::getName, Function.identity()));
    }