code: def find_proxy_plugin(component, plugin_name):
      
  
      reg = ComponentRegistry()
  
      plugins = reg.load_extensions('iotile.proxy_plugin', comp_filter=component, class_filter=TileBusProxyPlugin,
                                    product_name='proxy_plugin')
  
      for _name, plugin in plugins:
          if plugin.__name__ == plugin_name:
              return plugin
  
      raise DataError("Could not find proxy plugin module in registered components or installed distributions",
                      component=component, name=plugin_name)
docs: Attempt to find a proxy plugin provided by a specific component
  
      Args:
          component (string): The name of the component that provides the plugin
          plugin_name (string): The name of the plugin to load
  
      Returns:
          TileBuxProxyPlugin: The plugin, if found, otherwise raises DataError