code: def plot_single(self, col, ax):
      raise NotImplementedError(f"This type of input is not supported")
  
file_path: qlib/qlib/contrib/report/data/base.py
imports: import pandas
  from qlib.log import TimeInspector
  from qlib.contrib.report.utils import sub_fig_generator
label_desc: Use image node_id 3 for calling the FeaAnalyser obj's underlying member method code with example usage: obj.plot_single(col, ax) without return types