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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_active(self):
 """This plugin is active if 2 conditions hold. 1. The scalars plugin is registered and active. 2. There is a custom layout for the dashboard. Returns: A boolean. Whether the plugin is active. """

    if not self._multiplexer:
      return False

    scalars_plugin_instance = self._get_scalars_plugin()
    if not (scalars_plugin_instance and
            scalars_plugin_instance.is_active()):
      return False

    # This plugin is active if any run has a layout.
    return bool(self._multiplexer.PluginRunToTagToContent(metadata.PLUGIN_NAME))