anchor.diff:  import "package:photo_view/src/photo_view_computed_scale.dart";
   import 'package:photo_view/src/photo_view_scale_state.dart';
   
  -// Given a [PhotoViewScaleState], returns a
  +/// Given a [PhotoViewScaleState], returns a scale value considering scaleBoundaries.
   double getScaleForScaleState(
     PhotoViewScaleState scaleState,
     ScaleBoundaries scaleBoundaries,
  
positive.code:   }
  }
  
  class ScaleBoundaries {
    const ScaleBoundaries(
      this._minScale,
  
negative.code:   return size.clamp(scaleBoundaries.minScale, scaleBoundaries.maxScale);
  }
  
  /// Simple class to store a min and a max value
  class CornersRange {
    const CornersRange(this.min, this.max);
    final double min;
  