title: Jackson Databind ObjectMapper convertValue with custom mapping implementaion
body: <p><strong>Foo1</strong> </p>
  
  <pre><code>public class Foo1{
  
  private Long id;
  private String code;
  private String name;
  private Boolean rState;
  private String comments;     // Contain json data
  private String attachments;  // Contain json data
  
  }
  </code></pre>
  
  <p><strong>Foo2</strong></p>
  
  <pre><code>public class Foo2{
  
  private Long id;
  private String code;
  private String name;
  private Boolean rState;
  private List comments;
  private List attachments;
  
  }
  </code></pre>
  
  <p>convert value </p>
  
  <pre><code>new ObjectMapper().convertValue(foo1, Foo2.class);
  </code></pre>
  
  <p>is it possible, when I call convert value, json String automatically convert to list ?</p>