_fields->removeFieldsWithoutAnyTimeStep();
std::vector<std::string> meshNames(_ms->getMeshesNames());
std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileFields> > fields_per_mesh(meshNames.size());
_fields->removeFieldsWithoutAnyTimeStep();
std::vector<std::string> meshNames(_ms->getMeshesNames());
std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileFields> > fields_per_mesh(meshNames.size());