presto-parser/src/main/java/io/prestosql/sql/tree/Delete.java/Delete/Delete
class Delete:    private Delete(Optional<NodeLocation> location, Table table, Optional<Expression> where)
    {
        super(location);
        this.table = requireNonNull(table, "table is null");
        this.where = requireNonNull(where, "where is null");
    }