code: def _get_axis_dims(self, element):
      return (None, None)
  
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 6 for calling the RadialHeatMapPlot obj's underlying member method code with example usage: obj._get_axis_dims(element) and returns: None,  None