[vtkusers] What method I get value RotateZ Actor from?

[kitti koonsanit]

cylinder = new vtkCylinderSource();
cylinder.SetResolution(50);
cylinder.SetRadius(0.08);

cylinderMapper = new vtkPolyDataMapper();
cylinderMapper.SetInput(cylinder[0].GetOutput());

vtkActorcylinderArray = new vtkActor();
vtkActorcylinderArray.SetPosition(0.0,0.0,0.0);
vtkActorcylinderArray.SetMapper(cylinderMapper[0]);

vtkActorcylinderArray.RotateZ(22);
I set  vtkActor property   that  rotatez  value 22;

. . .
vtkActor  kk = new vtkActor();
kk=vtkActorcylinderArray;


kk.GetRotateZ()????  = 22    in VTK  do not have  GetAngleRotateZ()  Method
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see code  on the top
 What method  I get  value AngleZ Actor from?
if  I want get   RotateAngleZ()  that  value  20

--->  What method  I get value AngleZ from?

thank you
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