title: Live Data observe for object single property change
body: <p>In Android project implemented Android Architecture component successfully as per developer guideline but the problem is we can observe full object change using LiveData </p>
  
  <pre><code>  mQueViewModel.getLiveQuestion().observe(this, new Observer&lt;Question&gt;() {
          @Override
          public void onChanged(@Nullable Question question) {
              Log.i(TAG, "onChanged: ");
              setQuestionDetails();
          }
      });
  </code></pre>
  
  <p>Any single object property change fire <code>OnChanged</code> this cause to set all data again to UI So is there any way to implement property change like <code>onDescriptionChange</code>, <code>onImageChange</code> ...</p>