class_docstr: Window covers the entire grid,
  meaning every possible alignment between series1 and series2 is considered.
code: def __len__(self):
      return self.n * self.m + 1
  
imports: import array
  from abc import ABC, abstractmethod
  from math import atan, tan
  from typing import Tuple
  import numpy
  from darts.logging import raise_if, raise_if_not
label_desc: Use image node_id 1 for calling the NoWindow obj's underlying member method code with example usage: obj.__len__() and returns: unknown