title: How to partially update a realm object
body: <p>How do I update a realm object partially?</p>
  
  <p>Imagine I have a model like this:</p>
  
  <pre><code>class Person {
      @PrimaryKey long id;
      String name;
      Address address;
  }
  </code></pre>
  
  <p>Let's assume I sync my local realm database with a backend and the backend gives me only a <code>Person</code> with <code>id</code> and <code>name</code> where the name has changed (no address).</p>
  
  <p>How do I update only the <code>Person.name</code> ? Furthermore, I want <code>Person.address</code> stay as it is in the local database.</p>