+/// pointer to the initialisation method for any progress bar
+ gdcmMethod *startMethod;
+/// pointer to the incrementation method for any progress bar
+ gdcmMethod *progressMethod;
+/// pointer to the termination method for any progress bar
+ gdcmMethod *endMethod;
+/// pointer to the ??? method for any progress bar
+ gdcmMethod *startMethodArgDelete;
+/// pointer to the ??? method for any progress bar
+ gdcmMethod *progressMethodArgDelete;
+/// pointer to the ??? method for any progress bar
+ gdcmMethod *endMethodArgDelete;
+/// pointer to the ??? for any progress bar
+ void *startArg;
+/// pointer to the ??? for any progress bar
+ void *progressArg;
+/// pointer to the ??? for any progress bar
+ void *endArg;
+/// value of the ??? for any progress bar
+ float progress;
+/// value of the ??? for any progress bar
+ bool abort;