anchor.diff:  
   /**
    * Float32x4 immutable value type and operations.
  - * 
  + *
    * Float32x4 stores 4 32-bit floating point values in "lanes".
    * The lanes are "x", "y", "z", and "w" respectively.
    */
  
positive.code:   /**
     * Returns the positive integer represented by the byte at the specified
     * [byteOffset] in this object, in unsigned binary form.
     * 
     * The return value will be between 0 and 255, inclusive.
     *
     * Throws [RangeError] if [byteOffset] is negative, or
  
negative.code:   /**
     * Creates a [Uint16List] with the same length as the [elements] list
     * and copies over the elements.
     *
     * Values are truncated to fit in the list when they are copied,
     * the same way `operator[]` truncates values.
     */
    external factory Uint16List.fromList(List<int> elements);
  
  