code: public static <T> JavaFXBinder<T> bind(WritableValue<T> writableDoubleValue) {
          requireNonNull(writableDoubleValue, "writableDoubleValue");
          return new DefaultJavaFXBinder(writableDoubleValue);
      }
docs: Start point of the fluent API to create a binding.
  @param writableDoubleValue the javafx property
  @return binder that can be used by the fluent API to create binding.