anchor.diff:   * A fixed-length, random-access sequence of bytes that also provides random
    * and unaligned access to the fixed-width integers and floating point
    * numbers represented by those bytes.
  - * 
  + *
    * `ByteData` may be used to pack and unpack data from external sources
    * (such as networks or files systems), and to process large quantities
    * of numerical data more efficiently than would be possible
  
positive.code: 
  /**
   * A fixed-length list of 8-bit unsigned integers.
   * 
   * For long lists, this implementation can be considerably
   * more space- and time-efficient than the default [List] implementation.
   */
  
negative.code: 
  /**
   * Int32x4 and operations.
   *
   * Int32x4 stores 4 32-bit bit-masks in "lanes".
   * The lanes are "x", "y", "z", and "w" respectively.
   */
  