code: def render_check_and_set_platforms(self):
          
          phase = 'prebuild_plugins'
          plugin = 'check_and_set_platforms'
          if not self.pt.has_plugin_conf(phase, plugin):
              return
  
          if self.user_params.koji_target.value:
              self.pt.set_plugin_arg(phase, plugin, "koji_target",
                                     self.user_params.koji_target.value)
docs: If the check_and_set_platforms plugin is present, configure it