+ MEDLOADER_EXPORT std::vector<std::string> getGroupsOnSpecifiedLev(int meshDimRelToMaxExt) const;
+ MEDLOADER_EXPORT std::vector<int> getGrpNonEmptyLevelsExt(const std::string& grp) const;
+ MEDLOADER_EXPORT std::vector<int> getGrpNonEmptyLevels(const std::string& grp) const;
+ MEDLOADER_EXPORT std::vector<int> getGrpsNonEmptyLevels(const std::vector<std::string>& grps) const;
+ MEDLOADER_EXPORT std::vector<int> getGrpsNonEmptyLevelsExt(const std::vector<std::string>& grps) const;
+ MEDLOADER_EXPORT virtual std::vector<int> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const = 0;
+ MEDLOADER_EXPORT virtual std::vector<int> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const = 0;
+ MEDLOADER_EXPORT std::vector<int> getFamNonEmptyLevels(const std::string& fam) const;
+ MEDLOADER_EXPORT std::vector<int> getFamNonEmptyLevelsExt(const std::string& fam) const;
+ MEDLOADER_EXPORT std::vector<std::string> getFamiliesNamesWithFilePointOfView() const;
+ MEDLOADER_EXPORT static std::string GetMagicFamilyStr();