anchor.diff:    /// entire window contains missing values, the result is 0.
     ///
     /// [category:Moving windows]
  -  static member movingCount size (series:Series<'K, float>) : Series<'K, float> =
  +  static member inline movingCount size (series:Series<'K, 'V>) : Series<'K, float> =
       applyMovingSumsTransform 0 size (fun s -> s.nobs) series
   
     /// Returns a series that contains sums over a moving window of the specified size.
  
positive.code:   /// a given key is calculated from all elements with smaller keys).
    ///
    /// [category:Expanding windows]
    static member expandingCount (series:Series<'K, float>) : Series<'K, float> =
      applyExpandingMomentsTransform (fun w -> w.nobs) series
  
    /// Returns a series that contains sums over expanding windows (the value for
  
negative.code:   /// entire window contains missing values, the result is 0.
    ///
    /// [category:Moving windows]
    static member inline movingSum size (series:Series<'K, 'V>) : Series<'K, float> =
      applyMovingSumsTransform 1 size (fun s -> s.sum) series
  
    /// Returns a series that contains means over a moving window of the specified size.
  