code: def test_not_using_class_variables_vdims(self):
      init_vdims = RGB(self.rgb_array).vdims
      cls_vdims = RGB.vdims
      for i, c in zip(init_vdims, cls_vdims):
          assert i is not c
          assert i == c
  
imports: import numpy
  from holoviews.element import HSV, RGB, Curve, Image, QuadMesh, Raster
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 5 for calling the TestRGB obj's underlying member method code with example usage: obj.test_not_using_class_variables_vdims() without return types