presto-parser/src/main/java/io/prestosql/sql/tree/AddColumn.java/AddColumn/AddColumn
class AddColumn:    private AddColumn(Optional<NodeLocation> location, QualifiedName name, ColumnDefinition column)
    {
        super(location);
        this.name = requireNonNull(name, "table is null");
        this.column = requireNonNull(column, "column is null");
    }