class_docstr: For testing of basic composite element types
class_docstr_tok: ["For","testing","of","basic","composite","element","types"]
code: def test_layout_rmul_overlay_ncols_preserved(self):
      assert (
          self.view3 * (self.view1 + self.view2).cols(1)
      )._max_cols == 1
  
imports: import numpy
  import pytest
  from holoviews import AdjointLayout, Element, GridSpace, HoloMap, Layout, NdLayout, Overlay
  from holoviews.element import Curve, HLine, Image
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 5 for calling the CompositeTest obj's underlying member method code with example usage: obj.test_layout_rmul_overlay_ncols_preserved() without return types