class_docstr: Class to handle logic from ForestPlot.
docstr: Add legend with colorcoded model info.
docstr_tok: ["Add","legend","with","colorcoded","model","info","."]
code: def legend(self, ax):
      """Add legend with colorcoded model info."""
      handles = [Line2D([], [], color=c) for c in self.colors]
      ax.legend(handles=handles, labels=self.model_names)
  
imports: from collections import OrderedDict, defaultdict
  from itertools import tee
  import matplotlib.pyplot
  import numpy
  from matplotlib.colors import to_rgba
  from matplotlib.lines import Line2D
  from ....stats import hdi
  from ....stats.density_utils import get_bins, histogram, kde
  from ....stats.diagnostics import _ess, _rhat
  from ....sel_utils import xarray_var_iter
  from ....utils import conditional_jit
  from ...plot_utils import _scale_fig_size
  from .None import backend_kwarg_defaults, backend_show
label_desc: Use image node_id 4 for calling the PlotHandler obj's underlying member method code with example usage: obj.legend(ax) without return types