code: def check_offsets(self, points, x, y):
      offsets = points.get_offsets().T
      assert_array_equal(offsets[0], x)
      assert_array_equal(offsets[1], y)
  
imports: from matplotlib.colors import to_rgba, to_rgba_array
  import pytest
  from numpy.testing import assert_array_equal
  from seaborn.palettes import color_palette
  from seaborn._core.plot import Plot
  from seaborn._marks.dot import Dot, Dots
label_desc: Use image node_id 1 for calling the DotBase obj's underlying member method code with example usage: obj.check_offsets(points, x, y) without return types