code: def test_xarray_transform(self):
      import xarray as xr
  
      data = np.arange(0, 60).reshape(6, 10)
      x = np.arange(10)
      y = np.arange(6)
      da = xr.DataArray(
          data, coords={"y": y, "x": x}, dims=("y", "x"), name="value"
      )
      img = da.hvplot.image(transforms=dict(value=hv.dim("value") * 10))
      self.assertEqual(img.data.value.data, da.data * 10)
  
file_path: hvplot/hvplot/tests/testtransforms.py
imports: from unittest import SkipTest
  import holoviews
  import numpy
  import pandas
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 2 for calling the TestXArrayTransforms obj's underlying member method code with example usage: obj.test_xarray_transform() without return types