class_docstr: Handles a ListMetricEvals request.
class_docstr_tok: ["Handles","a","ListMetricEvals","request","."]
docstr: Constructor.
  
  Args:
      request_context: A tensorboard.context.RequestContext.
      request: A ListSessionGroupsRequest protobuf.
      scalars_plugin_instance: A scalars_plugin.ScalarsPlugin.
      experiment: A experiment ID, as a possibly-empty `str`.
docstr_tok: ["Constructor",".","Args",":","request_context",":","A","tensorboard.context.RequestContext",".","request",":","A","ListSessionGroupsRequest","protobuf",".","scalars_plugin_instance",":","A","scalars_plugin.ScalarsPlugin",".","experiment",":","A","experiment","ID",",","as","a","possibly-empty","`","str","`","."]
code: def __init__(
      self,
      request_context,
      request,
      scalars_plugin_instance,
      experiment,
  ):
      """Constructor.
  
      Args:
          request_context: A tensorboard.context.RequestContext.
          request: A ListSessionGroupsRequest protobuf.
          scalars_plugin_instance: A scalars_plugin.ScalarsPlugin.
          experiment: A experiment ID, as a possibly-empty `str`.
      """
      self._request_context = request_context
      self._request = request
      self._scalars_plugin_instance = scalars_plugin_instance
      self._experiment = experiment
  
imports: from tensorboard.plugins.hparams import metrics
  from tensorboard.plugins.scalar import scalars_plugin
label_desc: Use image node_id 1 to create a new Handler object  with example: obj = Handler(request_context, request, scalars_plugin_instance, experiment)