code: def initialise_network(self):
      decay = self.net_param.decay
      self.net = ApplicationNetFactory.create(self.net_param.name)(
          decay
      )
  
imports: from __future__ import absolute_import, division, print_function
  import tensorflow
  from niftynet.application.base_application import BaseApplication
  from niftynet.io.image_reader import ImageReader
  from niftynet.contrib.sampler_pairwise.sampler_pairwise_uniform import PairwiseUniformSampler
  from niftynet.contrib.sampler_pairwise.sampler_pairwise_resize import PairwiseResizeSampler
  from niftynet.engine.application_factory import OptimiserFactory, ApplicationNetFactory
  from niftynet.engine.application_variables import NETWORK_OUTPUT, CONSOLE, TF_SUMMARIES
  from niftynet.engine.windows_aggregator_resize import ResizeSamplesAggregator
  from niftynet.layer.resampler import ResamplerLayer
  from niftynet.layer.pad import PadLayer
  from niftynet.layer.loss_segmentation import LossFunction
label_desc: Use image node_id 4 for calling the RegApp obj's underlying member method code with example usage: obj.initialise_network() without return types