class_docstr: An EventWindow class is responsible for making calculation over a moving window of values.
  
  :param windowSize: The size of the window. Must be greater than 0.
  :type windowSize: int.
  :param dtype: The desired data-type for the array.
  :type dtype: data-type.
  :param skipNone: True if None values should not be included in the window.
  :type skipNone: boolean.
  
  .. note::
      This is a base class and should not be used directly.
docstr: Returns the window size.
docstr_tok: ["Returns","the","window","size","."]
code: def getWindowSize(self):
      """Returns the window size."""
      return self.__windowSize
  
file_path: pyalgotrade/pyalgotrade/technical/__init__.py
imports: from pyalgotrade.utils import collections
  from pyalgotrade import dataseries
label_desc: Use image node_id 4 for calling the EventWindow obj's underlying member method code with example usage: obj.getWindowSize() and returns: self