code: def trace_kwargs(cls, is_geo=False, **kwargs):
      return {"type": "heatmap"}
  
file_path: holoviews/holoviews/plotting/plotly/raster.py
imports: import numpy
  import param
  from ...core.options import SkipRendering
  from ...core.util import isfinite
  from ...element import Image, Raster
  from ..mixins import HeatMapMixin
  from .element import ColorbarPlot
label_desc: Use image node_id 1 for calling the RasterPlot obj's underlying member method code with example usage: obj.trace_kwargs(cls, is_geo) and returns: dict