93 struct RandomVariableBase {  struct
104     std::shared_ptr<RandomVariableBase> parent1 = nullptr;  argument
105     std::shared_ptr<RandomVariableBase> parent2 = nullptr;  argument
106     std::vector<std::weak_ptr<RandomVariableBase>> children;  argument
111     explicit RandomVariableBase(int value);  argument
112     RandomVariableBase(int lower, int upper);
113     explicit RandomVariableBase(const std::vector<int>& choices);
114     RandomVariableBase(const std::shared_ptr<RandomVariableBase>& lhs,
115                        const std::shared_ptr<RandomVariableBase>& rhs,
117     RandomVariableBase(const RandomVariableBase&) = delete;
118     RandomVariableBase& operator=(const RandomVariableBase&) = delete;  argument
132 using RandomVariableNode = std::shared_ptr<RandomVariableBase>;