class_docstr: Output the data as input
  
  Examples:
      p1 = towhee.pipe.input('url').output('url')
code: def initialize(self):
      self._output_ques[0].max_size = 0
      return super().initialize()
  
imports: from .node import Node
  from ._single_input import SingleInputMixin
  from towhee.runtime.time_profiler import Event
label_desc: Use image node_id 1 for calling the Output obj's underlying member method code with example usage: obj.initialize() and returns: super