code: public static MutableFloat fromExternal(final Supplier<Float> s, final Consumer<Float> c) {
          return new MutableFloat() {
              @Override
              public float getAsFloat() {
                  return s.get();
              }
  
              @Override
              public Float get() {
                  return getAsFloat();
              }
  
              @Override
              public MutableFloat set(final float value) {
                  c.accept(value);
                  return this;
              }
          };
      }
docs: Construct a MutableFloat that gets and sets an external value using the provided Supplier and Consumer
  
  e.g.
  <pre>
  {@code
  MutableFloat mutable = MutableFloat.fromExternal(()->!this.value,val->!this.value);
  }
  </pre>
  
  
  @param s Supplier of an external value
  @param c Consumer that sets an external value
  @return MutableFloat that gets / sets an external (mutable) value