code: def _get_corner_points(x0, y0, x1, y1):
      """
      Returns the corner points of a scatter rectangle
  
      :param x0: x-start
      :param y0: y-lower
      :param x1: x-end
      :param y1: y-upper
      :return: ([x], [y]), tuple of lists containing the x and y values
      """
  
      return ([x0, x1, x1, x0], [y0, y0, y1, y1])
  
file_path: catboost/contrib/python/plotly/py2/plotly/figure_factory/_gantt.py
imports: from __future__ import absolute_import
  from numbers import Number
  import copy
  from plotly import exceptions, optional_imports
  import plotly.colors
  from plotly.figure_factory import utils
  import plotly.graph_objects
label_desc: Use image node_id 1 for calling a global function with example usage: _get_corner_points(x0, y0, x1, y1) and returns: list,  list