code: def is_radial(cls, heatmap):
      heatmap = (
          heatmap.last if isinstance(heatmap, HoloMap) else heatmap
      )
      opts = cls.lookup_options(heatmap, "plot").options
      return (
          any(
              o in opts
              for o in ("start_angle", "radius_inner", "radius_outer")
          )
          and not (opts.get("radial") == False)
      ) or opts.get("radial", False)
  
imports: import numpy
  import param
  from bokeh.models.glyphs import AnnularWedge
  from ...core.data import GridInterface
  from ...core.spaces import HoloMap
  from ...core.util import dimension_sanitizer, is_nan
  from .element import ColorbarPlot, CompositeElementPlot
  from .selection import BokehOverlaySelectionDisplay
  from .styles import base_properties, fill_properties, line_properties, text_properties
label_desc: Use image node_id 1 for calling the HeatMapPlot obj's underlying member method code with example usage: obj.is_radial(cls, heatmap) and returns: unknown