#pragma link C++ class AliChaoticityMCStruct+;
#pragma link C++ class AliChaoticityPairStruct+;
#pragma link C++ class AliChaoticityNormPairStruct+;
+
+#pragma link C++ class AliFourPion+;
+#pragma link C++ class AliFourPionEventCollection+;
+#pragma link C++ class AliFourPionEventStruct+;
+#pragma link C++ class AliFourPionTrackStruct+;
+#pragma link C++ class AliFourPionMCStruct+;