presto-parser/src/main/java/io/prestosql/sql/tree/Comment.java/Comment/equals
class Comment:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }
        Comment o = (Comment) obj;
        return Objects.equals(type, o.type) &&
                Objects.equals(name, o.name) &&
                Objects.equals(comment, o.comment);
    }