Make protected setter method public

Setter method should probably have originally been public but
was instead protected. Changing it to public now.

Filters/Parallel/vtkProcessIdScalars.h

@@ -43,21 +43,27 @@ public:
   vtkTypeMacro(vtkProcessIdScalars, vtkDataSetAlgorithm);
   void PrintSelf(ostream& os, vtkIndent indent) override;
 
+  //@{
   /**
    * Option to centerate cell scalars of points scalars.  Default is point
-   * scalars.
+   * scalars (0).
    */
   void SetScalarModeToCellData() { this->SetCellScalarsFlag(1); }
   void SetScalarModeToPointData() { this->SetCellScalarsFlag(0); }
+  vtkSetMacro(CellScalarsFlag, int);
   int GetScalarMode() { return this->CellScalarsFlag; }
+  //@}
 
-  // Dscription:
-  // This option uses a random mapping between pieces and scalar values.
-  // The scalar values are chosen between 0 and 1.  By default, random
-  // mode is off.
+  //@{
+  /**
+   * This option uses a random mapping between pieces and scalar values.
+   * The scalar values are chosen between 0 and 1.  By default, random
+   * mode is off.
+   */
   vtkSetMacro(RandomMode, vtkTypeBool);
   vtkGetMacro(RandomMode, vtkTypeBool);
   vtkBooleanMacro(RandomMode, vtkTypeBool);
+  //@}
 
   //@{
   /**
@@ -78,7 +84,6 @@ protected:
   vtkIntArray* MakeProcessIdScalars(int piece, vtkIdType numScalars);
   vtkFloatArray* MakeRandomScalars(int piece, vtkIdType numScalars);
 
-  vtkSetMacro(CellScalarsFlag, int);
   int CellScalarsFlag;
   vtkTypeBool RandomMode;