code: def open_directory_dialog():
      return dialog.getDirDialog()
  
imports: import copy
  import datetime
  import os
  import sys
  import time
  from itertools import cycle
  from os import listdir
  from os.path import isfile, join, isdir
  from bokeh.layouts import row, column, Spacer, ToolbarBox
  from bokeh.models import ColumnDataSource, Range1d, LinearAxis, Legend, WheelZoomTool, CrosshairTool, ResetTool, SaveTool, Toolbar, PanTool, BoxZoomTool, Toggle
  from bokeh.models.callbacks import CustomJS
  from bokeh.models.widgets import RadioButtonGroup, MultiSelect, Button, Select, Slider, Div, CheckboxGroup
  from bokeh.plotting import figure
  from rl_coach.dashboard_components.globals import signals_files, x_axis_labels, x_axis_options, show_spinner, hide_spinner, dialog, FolderType, RunType, add_directory_csv_files, doc, display_boards, layouts, crcolor, crx, cry, color_resolution, crRGBs, rgb_to_hex, x_axis
  from rl_coach.dashboard_components.signals_files_group import SignalsFilesGroup
  from rl_coach.dashboard_components.signals_file import SignalsFile
label_desc: Use image node_id 9 for calling a global function with example usage: open_directory_dialog() and returns: dialog