bool m_OptimizerInitialized;
InternalOptimizerType * m_VnlOptimizer;
+#if ITK_VERSION_MAJOR > 3
+ mutable std::ostringstream m_StopConditionDescription;
+#else
mutable itk::OStringStream m_StopConditionDescription;
+#endif
BoundValueType m_LowerBound;
BoundValueType m_UpperBound;
BoundSelectionType m_BoundSelection;