code: def cast(self, dtype):
      super(DropBlock, self).cast(dtype)
      self.dtype = dtype
  
file_path: gluon-cv/gluoncv/nn/dropblock.py
imports: from functools import partial
  import mxnet
  from mxnet.gluon.nn import HybridBlock
label_desc: Use image node_id 3 for calling the DropBlock obj's underlying member method code with example usage: obj.cast(dtype) without return types