|  | VTK
    9.0.1
    | 
 
 
 
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   23 #ifndef vtkInformationVariantVectorKey_h 
   24 #define vtkInformationVariantVectorKey_h 
   26 #include "vtkCommonCoreModule.h"  
  
a simple class to control print indentation
A atomic type representing the union of many types.