code: def _add_palette(self, palette):
      self._palettes[palette.name.lower()] = palette
  
imports: from collections import OrderedDict
  from bokeh import palettes
  from IPython.core.display import HTML
  import yaml
  from chartify._core.options import options
  from chartify._core import colour
label_desc: Use image node_id 3 for calling the ColorPalettes obj's underlying member method code with example usage: obj._add_palette(palette) without return types