title: Update the existing Yaml file
body: <p>I want to update my existing <code>user.yaml</code> file without erasing other objects or properties.</p>
  
  <p>I have been googling for 2 days for a solution, but with no luck.</p>
  
  <p><strong>Actual Output:</strong></p>
  
  <pre><code>name: Test User
  age: 30
  address:
    line1: My Address Line 1
    line2: Address line 2
    city: Washington D.C.
    zip: 20000
  roles:
    - User
    - Editor
  </code></pre>
  
  <p><strong>Expected Output</strong></p>
  
  <pre><code>name: Test User
  age: 30
  address:
    line1: Your address line 1
    line2: Your Address line 2
    city: Bangalore
    zip: 560010
  roles:
    - User
    - Editor
  </code></pre>
  
  <p>The above is my yaml file. I want to fetch this yaml file and update the address of the object and write the same information to the new yaml file / existing yaml file. This has to be done without harming other objects (i.e other objects key and values should be retained).</p>