anchor.diff:          | MonoAndroid MonoAndroidVersion.V7 -> [ MonoAndroid MonoAndroidVersion.V6; DotNetStandard DotNetStandardVersion.V1_6 ]
           | MonoAndroid MonoAndroidVersion.V7_1 -> [ MonoAndroid MonoAndroidVersion.V7 ]
           | MonoAndroid MonoAndroidVersion.V8 -> [ MonoAndroid MonoAndroidVersion.V7_1 ]
  +        | MonoAndroid MonoAndroidVersion.V8_1 -> [ MonoAndroid MonoAndroidVersion.V8 ]
           | MonoTouch -> [ DotNetStandard DotNetStandardVersion.V1_6 ]
           | MonoMac -> [ DotNetStandard DotNetStandardVersion.V1_6 ]
           | Native(_) -> [ ]
  
positive.code:         MonoAndroidVersion.V7
          MonoAndroidVersion.V7_1
          MonoAndroidVersion.V8
      ]
  
      let MonoAndroidProfiles =
  
negative.code:         | MonoAndroidVersion.V7    -> "7.0"
          | MonoAndroidVersion.V7_1   -> "7.1"
          | MonoAndroidVersion.V8   -> "8.0"
          | MonoAndroidVersion.V8_1   -> "8.1"
      override this.ToString() =
          match this with
          | MonoAndroidVersion.V1    -> "v1.0"
  