code: def set_cmap(cmap):
      """
      Set the color map of the current 'color' scale.
      """
      scale = _context["scales"]["color"]
      for k, v in _process_cmap(cmap).items():
          setattr(scale, k, v)
      return scale
  
imports: import sys
  from collections import OrderedDict
  from IPython.display import display
  from ipywidgets import Image
  from numpy import arange, issubdtype, array, column_stack, shape
  from .figure import Figure
  from bqscales import Scale, LinearScale, Mercator
  from .axes import Axis
  from .marks import Lines, Scatter, Hist, Bars, OHLC, Pie, Map, Image, Label, HeatMap, GridHeatMap, topo_load, Boxplot, Bins
  from .interacts import BrushIntervalSelector, FastIntervalSelector, BrushSelector, IndexSelector, MultiSelector, LassoSelector
  from traitlets.utils.sentinel import Sentinel
  import functools
label_desc: Use image node_id 20 for calling a global function with example usage: set_cmap(cmap) and returns: scale