code: def __len__(self):
      return len(self.splits)
  
imports: import torch
  import numpy
  from collections import OrderedDict, defaultdict
  from torchmeta.utils.data.task import Task, ConcatTask, SubsetTask
  from torchmeta.transforms.utils import apply_wrapper
label_desc: Use image node_id 8 for calling the Splitter obj's underlying member method code with example usage: obj.__len__() and returns: len