class_docstr: TowheeDataSet is a kind of dataset wrapper, where the `self.dataset` is the true dataset.
code: def __init__(self):
      self.framework = None
      self.dataset = None
  
file_path: towhee/towhee/data/dataset/dataset.py
imports: from torch.utils.data.dataset import Dataset
label_desc: Use image node_id 1 to create a new TowheeDataSet object  with example: obj = TowheeDataSet()