docs: def add_info(self, data):
          """add info to a build"""
          for key in data:
              # verboten
              if key in ('status','state','name','id','application','services','release'):
                  raise ValueError("Sorry, cannot set build info with key of {}".format(key))
              self.obj[key] = data[key]
          self.changes.append("Adding build info")
          return self