title: gson custom convert json key to string
body: <p>My server is returning json key-value pair like </p>
  
  <pre><code>{
      "my-name":"name"
  }
  </code></pre>
  
  <p>I am using retrofit lib. So that gson is converting this to java object. So I created java object like below</p>
  
  <pre><code>public class Example{
      public String myname;  // cannot have my-name variable
  }
  </code></pre>
  
  <p>response is giving me is "myname=null". Because variable in json is my-name but I cannot have same variable in java class. How to have same variable name like json in java?</p>