code: def create_dir(self, dir_name):
      if not os.path.exists(dir_name):
          os.mkdir(dir_name)
  
imports: from imports import *
  from plotly_graphs import *
  from protodash import *
  from insights import *
  from plotly_css import *
  import pandasql
  import string
  import random
  import os
  from apps import global_explanation, local_explanation, distribution, feature_interaction, cohort
  from app import app
  from what_if import *
  from calculate_shap import *
  from analytics import Analytics
  from cohort_analysis import *
label_desc: Use image node_id 2 for calling the dashboard obj's underlying member method code with example usage: obj.create_dir(dir_name) without return types