title: Firebase notification style
body: <p>I use firebase with cURL. I wonder how to use big image style and put big image url to the "notification" section in json file.</p>
  
  <p>My file looks like that:</p>
  
  <pre><code>{
  "to" : "my_device_id",
  
  "notification" : {
    "body" : "great match!",
    "title" : "Portugal vs. Denmark",
    "icon" : "ic_notify",
    "click_action" : "FIREBASE_NOTIFICATION"
  }
  "data" : {
    "data1" : "data1_content"
  }
  }
  </code></pre>
  
  <p>I know how to put icon and click_action. I'm looking for keys for style and big picture content.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Ok, I just realized how looks firebase RemoteMessage.Notification class. There are no getters like "getBigPicture". It's probably impossible to do what I want, but I leave this question on account of firebase's newer versions (where they add this feature, I suppose.)</p>