code: def stream_infos(self):
      if self.proposals_si is None:
          return [self.image_si, self.roi_si, self.dims_si]
      else:
          return [
              self.image_si,
              self.roi_si,
              self.dims_si,
              self.proposals_si,
              self.label_targets_si,
              self.bbox_targets_si,
              self.bbiw_si,
          ]
  
file_path: CNTK/Examples/Image/Detection/utils/od_mb_source.py
imports: from cntk.io import UserMinibatchSource, StreamInformation, MinibatchData
  from cntk.core import Value
  from utils.od_reader import ObjectDetectionReader
  import numpy
label_desc: Use image node_id 2 for calling the ObjectDetectionMinibatchSource obj's underlying member method code with example usage: obj.stream_infos() and returns: list, list