code: 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;
              }
          };
      }
docs: Construct a MutableByte that gets and sets an external value using the provided Supplier and Consumer
  
  e.g.
  <pre>
  {@code
  MutableByte mutable = MutableByte.fromExternal(()->!this.value,val->!this.value);
  }
  </pre>
  
  
  @param s Supplier of an external value
  @param c Consumer that sets an external value
  @return MutableByte that gets / sets an external (mutable) value