return components.hashCode() + 0x053c91cf;
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof OrPredicate) {
        OrPredicate<?> that = (OrPredicate<?>) obj;
        return components.equals(that.components);
      }
      return false;
    }

    @Override
    public String toString() {

      return components.hashCode() + 0x053c91cf;
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof OrPredicate) {
        OrPredicate<?> that = (OrPredicate<?>) obj;
        return components.equals(that.components);
      }
      return false;
    }

    @Override
    public String toString() {

 private:
  std::vector<Predicate*> operands_;
};

// Represents a logical disjunction of a set of predicates.
class OrPredicate : public Predicate {
 public:
  explicit OrPredicate(int64_t id, std::vector<Predicate*> operands)
      : Predicate(id), operands_(std::move(operands)) {}

  string ToString() const override {
    if (operands().empty()) {