code: def _pcolormesh_array2d(self, array, *args, **kwargs):
          
          x = numpy.concatenate((array.xindex.value, array.xspan[-1:]))
          y = numpy.concatenate((array.yindex.value, array.yspan[-1:]))
          xcoord, ycoord = numpy.meshgrid(x, y, copy=False, sparse=True)
          return self.pcolormesh(xcoord, ycoord, array.value.T, *args, **kwargs)
docs: Render an `~gwpy.types.Array2D` using `Axes.pcolormesh`