anchor.diff:          | EnumeratingOption of value: 'T option
           | DoneOption
   
  +    /// Support for makeRange<'T>.
       type RangeGeneratorEnumerator<'T when 'T :> IComparable<'T> and 'T : comparison>
                   (start: 'T
                  , endInclusive: 'T
  
positive.code: 
              member __.Reset(): unit = state <- BeforeFirstOption
  
      let inline makeOptionalRange<'T when 'T :> IComparable<'T> and 'T : comparison>
                  (start: 'T)
                  (endInclusive: 'T)
  
negative.code: 
              member __.Reset(): unit = state <- BeforeFirst
  
      /// Creates an enumerable range of 'T.
      let inline makeRange<'T when 'T :> IComparable<'T> and 'T : comparison>
                  (start: 'T)
                  (endInclusive: 'T)
  