title: How to convert Map<String, Object> to Map<Key, Value> in dart?
body: <p><strong>I have this Map of String, Object I want it to be flattened so the result is Map of Key, Value</strong> </p>
  
  <pre><code>void main(){
  
  
      var li = {"qotd_date":"2019-05-18T00:00:00.000+00:00","quote":{"id":61869,"dialogue":false,"private":false,"tags":[],"url":"https://favqs.com/quotes/wael-ghonim/61869-the-power-of--","favorites_count":1,"upvotes_count":0,"downvotes_count":0,"author":" Wael Ghonim ","author_permalink":"wael-ghonim","body":"The power of the people is greater than the people in power."}};
  
  
      print(li);
  
  }
  </code></pre>
  
  <p><strong>Current Output :</strong></p>
  
  <pre><code>{qotd_date: 2019-05-18T00:00:00.000+00:00, quote: {id: 61869, dialogue: false, private: false, tags: [], url: https://favqs.com/quotes/wael-ghonim/61869-the-power-of--, favorites_count: 1, upvotes_count: 0, downvotes_count: 0, author:  Wael Ghonim , author_permalink: wael-ghonim, body: The power of the people is greater than the people in power.}}
  </code></pre>
  
  <p><strong>Expected Output I want is</strong> </p>
  
  <pre><code>{"qotd_date":"2019-05-18T00:00:00.000+00:00","id":61869,"dialogue":false,"private":false,"tags":[],"url":"https://favqs.com/quotes/wael-ghonim/61869-the-power-of--","favorites_count":1,"upvotes_count":0,"downvotes_count":0,"author":" Wael Ghonim ","author_permalink":"wael-ghonim","body":"The power of the people is greater than the people in power."};
  </code></pre>
  
  <p><strong><em>It is just like flattening the Map. Please help me get out of this?</em></strong></p>