Description of problem:

When you issue following rest query
[GET] /runtime/

/workitem/

the reply looks similar to this:
<work-item>
<id>5</id>
<name>Human Task</name>
<state>0</state>
<parameters>
<entry>
<key>ActorId</key>
<value xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xsi:type="xs:string">anton</value>
</entry>
<entry>
<key>TaskName</key>
<value xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xsi:type="xs:string">callbacktask</value>
</entry>
<entry>
<key>NodeName</key>
<value xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xsi:type="xs:string">callback task</value>
</entry>
</parameters>
<results/>
<processInstanceId>5</processInstanceId>
</work-item>

Is it necessary to include element <result> ? To my understanding this attribute will always be empty. If the workitem is still active, the results are not filled in yet. They are being filled in upon complete(result) method if I am not mistaken. However, when you query this workitem after completing it is not available anymore. Which simply makes me think that <result> will always be empty no matter what, therefore it seems unnecessary to include it in the reply.

Version-Release number of selected component (if applicable):

6.0.0 GA

How reproducible:
always

Steps to Reproduce:
1. Create process with one human task in the business-central, deploy and start the process
2. execute http://localhost:8080/business-central/rest/runtime/deploymentid/workitem/workitemid

I just used "1" on a clean installation, wasn't really sure how to retrieve the actual workitemid besides using method "try&fail".
3. Observe the output - <results/> element is always empty.

Actual results:

The output for runtime/deploymentid/workitem/workitemid includes element <results/> which will always be empty

Expected results:
the output does not include <results> element at all.

Additional info:

In case there is some way how to actually retrieve content of results using Rest API, please do let me know how before marking this as NOTABUG.