Return Id Property for User in REST API Group's User List Request

CoffeeforClosers

Please return the id property for users of a given group in a portal. 

If fetching the users for a given group, the current response is:

 <SPAN class="punctuation token">{</SPAN>
      <SPAN class="string token">"username"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"username1"</SPAN><SPAN class="punctuation token">,</SPAN>
      <SPAN class="string token">"fullName"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"First1 Last1"</SPAN><SPAN class="punctuation token">,</SPAN>
      <SPAN class="string token">"memberType"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"member"</SPAN><SPAN class="punctuation token">,</SPAN>
      <SPAN class="string token">"thumbnail"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">,</SPAN>
      <SPAN class="string token">"joined"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="number token">1460497506000</SPAN>
    <SPAN class="punctuation token">}</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Adding the user id value would provide for more effective relationships between user and group objects when using the REST or Python APIs.

User—ArcGIS REST API | ArcGIS for Developers 

<SPAN class="punctuation token">{</SPAN>
    <SPAN class="string token">"username"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"<username>"</SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"id"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"<user id>"</SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"fullName"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"<first name> <last name>"</SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"availableCredits"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="operator token"><</SPAN>available credits<SPAN class="operator token">></SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"assignedCredits"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="operator token"><</SPAN>allocated credits<SPAN class="operator token">></SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"firstName"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"<first name>"</SPAN><SPAN class="punctuation token">,</SPAN>
    <SPAN class="string token">"lastName"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">"<last name>"</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">}</SPAN>‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Edited to add additional syntax and revised property name from userId to id