code: def init_artists(self, ax, plot_args, plot_kwargs):
      # Draw edges
      color_opts = ["c", "cmap", "vmin", "vmax", "norm", "array"]
      groups = [g for g in self._style_groups if g != "annular"]
      edge_opts = filter_styles(plot_kwargs, "annular", groups)
      annuli = plot_args["annular"]
      edge_opts.pop("interpolation", None)
      annuli = PatchCollection(
          annuli, transform=ax.transAxes, **edge_opts
      )
      ax.add_collection(annuli)
  
      artists = {"artist": annuli}
  
      paths = plot_args["xseparator"]
      if paths:
          groups = [g for g in self._style_groups if g != "xmarks"]
          xmark_opts = filter_styles(
              plot_kwargs, "xmarks", groups, color_opts
          )
          xmark_opts.pop("edgecolors", None)
          xseparators = LineCollection(paths, **xmark_opts)
          ax.add_collection(xseparators)
          artists["xseparator"] = xseparators
  
      paths = plot_args["yseparator"]
      if paths:
          groups = [g for g in self._style_groups if g != "ymarks"]
          ymark_opts = filter_styles(
              plot_kwargs, "ymarks", groups, color_opts
          )
          ymark_opts.pop("edgecolors", None)
          yseparators = PatchCollection(
              paths,
              facecolor="none",
              transform=ax.transAxes,
              **ymark_opts,
          )
          ax.add_collection(yseparators)
          artists["yseparator"] = yseparators
  
      return artists
  
imports: from itertools import product
  import numpy
  import param
  from matplotlib.collections import LineCollection, PatchCollection
  from matplotlib.patches import Circle, Wedge
  from ...core.data import GridInterface
  from ...core.spaces import HoloMap
  from ...core.util import dimension_sanitizer, is_nan
  from ..mixins import HeatMapMixin
  from .element import ColorbarPlot
  from .raster import QuadMeshPlot
  from .util import filter_styles
label_desc: Use image node_id 7 for calling the RadialHeatMapPlot obj's underlying member method code with example usage: obj.init_artists(ax, plot_args, plot_kwargs) and returns: artists