Thickness.slice Method
        
 Returns a portion of the set thickness values as defined clockwise from the top.
 
         
        Parameters
        
            - begin
            
 
            - 
                
Type: Number (Integer)
Zero-based index at which to begin extraction.
Optional: True 
            - end
            
 
            - 
                
Type: Number (Integer)
Zero-based index before which to end extraction. 
        
        Return Value
        
Type: Thickness