code: def provide_data(self):
      return [mx.io.DataDesc("data", self.data.shape, self.dtype)]
  
file_path: DALI/docs/examples/frameworks/mxnet/demo/common/data.py
imports: import mxnet
  from mxnet.io import DataBatch, DataIter
  import numpy
label_desc: Use image node_id 3 for calling the SyntheticDataIter obj's underlying member method code with example usage: obj.provide_data() and returns: list