docs: public static MutableByte fromExternal(final Supplier<Byte> s, final Consumer<Byte> c) {
          return new MutableByte() {
              @Override
              public byte getAsByte() {
                  return s.get();
              }
  
              @Override
              public Byte get() {
                  return getAsByte();
              }
  
              @Override
              public MutableByte set(final byte value) {
                  c.accept(value);
                  return this;
              }
          };
      }