class_docstr: Mann-Whitney-Wilcoxon U test accumulator.
  
  Stores rank orders (1 to N), for comparison with a uniform order.
docstr: Return number of samples accumulated so far.
docstr_tok: ["Return","number","of","samples","accumulated","so","far","."]
code: def __len__(self):
      """Return number of samples accumulated so far."""
      return self.N
  
file_path: ultranest/ultranest/ordertest.py
imports: from __future__ import print_function, division
label_desc: Use image node_id 5 for calling the UniformOrderAccumulator obj's underlying member method code with example usage: obj.__len__() and returns: self