presto-main/src/main/java/io/prestosql/operator/annotations/OperatorImplementationDependency.java/OperatorImplementationDependency/equals
class OperatorImplementationDependency:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        OperatorImplementationDependency that = (OperatorImplementationDependency) o;
        return operator == that.operator &&
                Objects.equals(argumentTypes, that.argumentTypes);
    }