title: Missing ProcessParameterMetadata in TFS DefaultTemplate.xaml: where is for e.g. Items to Build in the Required category
body: <p>I'm trying to figure out how the Windows Workflow Foundation (WWF) template provided by default for builds in TFS specifies the Build process parameters in a build definition.</p>
  
  <p>This should happen via the <code>ProcessParameterMetadataCollection</code> and the <code>ProcessParameterMetadata</code> contained therein. However nowhere in the DefaultTemplate.xaml are they specified. There's no <em>Required</em> category or <em>Items to Build</em> item anywhere, and none of the others circled in red either. See picture below.</p>
  
  <p>I thought maybe they were specified in an attached workflow, alas my knowledge of WWF isn't that good and I can't find any attached workflows. Then I thought perhaps they might be specified in code as part of the build in activities. I have no idea, does anybody know?</p>
  
  <p><img src="https://i.stack.imgur.com/ARnHs.png" alt="Build process parameters missing in TFS DefaultTemplate.xaml"></p>