rxbinding/src/main/java/com/ogaclejapan/rx/binding/RxActions.java
public static <T extends TextView> RxAction<T, Float> setTextSize() {
    return new RxAction<T, Float>() {
      @Override
      public void call(T view, Float size) {
        view.setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
      }
    };
  }
public static <T extends TextView> RxAction<T, Float> setTextSize() {
    return new RxAction<T, Float>() {
      @Override
      public void call(T view, Float size) {
        view.setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
      }
    };
  }
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