std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
std::size_t getHeapMemorySizeWithoutChildren() const;
void writeLL(med_idt fid) const;
std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
std::size_t getHeapMemorySizeWithoutChildren() const;
void writeLL(med_idt fid) const;