old_contents: 
  import flask
  
  from ..app import bokeh_app
  
  ## This URL heirarchy is important, because of the way we build bokehjs
  ## the source mappings list the source file as being inside ../../src
  
  @bokeh_app.route('/bokehjs/static/<path:filename>')
  def bokehjs_file(filename):
       """ Return a specific BokehJS deployment file
  
      Args:
          filename (str): name of the file to retrieve
  
      """
      return flask.send_from_directory(bokeh_app.bokehjsdir, filename)
  
  @bokeh_app.route('/bokehjs/src/<path:filename>')
  def bokehjssrc_file(filename):
      """ Return a specific BokehJS source code file
  
      Args:
          filename (str): name of the file to retrieve
  
      """
      return flask.send_from_directory(bokeh_app.bokehjssrcdir, filename)
  
new_contents: 
  import flask
  
  from ..app import bokeh_app
  
  ## This URL heirarchy is important, because of the way we build bokehjs
  ## the source mappings list the source file as being inside ../../src
  
  @bokeh_app.route('/bokehjs/static/<path:filename>')
  def bokehjs_file(filename):
      """ Return a specific BokehJS deployment file
  
      Args:
          filename (str): name of the file to retrieve
  
      """
      return flask.send_from_directory(bokeh_app.bokehjsdir, filename)
  
  @bokeh_app.route('/bokehjs/src/<path:filename>')
  def bokehjssrc_file(filename):
      """ Return a specific BokehJS source code file
  
      Args:
          filename (str): name of the file to retrieve
  
      """
      return flask.send_from_directory(bokeh_app.bokehjssrcdir, filename)
  
subject: fix indentation