old_contents: from django.utils.module_loading import import_string
  from django.conf import settings
  
  from wagtail.wagtailembeds.finders.oembed import oembed
  from wagtail.wagtailembeds.finders.embedly import embedly
  
  
  MOVED_FINDERS = {
      'wagtail.wagtailembeds.embeds.embedly': 'wagtail.wagtailembeds.finders.embedly.embedly',
      'wagtail.wagtailembeds.embeds.oembed': 'wagtail.wagtailembeds.finders.oembed.oembed',
  }
  
  
  def get_default_finder():
      # Check if the user has set the embed finder manually
      if hasattr(settings, 'WAGTAILEMBEDS_EMBED_FINDER'):
          finder_name = settings.WAGTAILEMBEDS_EMBED_FINDER
  
          if finder_name in MOVED_FINDERS:
              finder_name = MOVED_FINDERS[finder_name]
  
          return import_string(finder_name)
  
      # Use embedly if the embedly key is set
      if hasattr(settings, 'WAGTAILEMBEDS_EMBEDLY_KEY'):
          return embedly
  
      # Fall back to oembed
      return oembed
  
new_contents: from django.utils.module_loading import import_string
  from django.conf import settings
  
  
  MOVED_FINDERS = {
      'wagtail.wagtailembeds.embeds.embedly': 'wagtail.wagtailembeds.finders.embedly.embedly',
      'wagtail.wagtailembeds.embeds.oembed': 'wagtail.wagtailembeds.finders.oembed.oembed',
  }
  
  
  def get_default_finder():
      # Check if the user has set the embed finder manually
      if hasattr(settings, 'WAGTAILEMBEDS_EMBED_FINDER'):
          finder_name = settings.WAGTAILEMBEDS_EMBED_FINDER
  
          if finder_name in MOVED_FINDERS:
              finder_name = MOVED_FINDERS[finder_name]
  
      elif hasattr(settings, 'WAGTAILEMBEDS_EMBEDLY_KEY'):
          # Default to Embedly as an embedly key is set
          finder_name = 'wagtail.wagtailembeds.finders.embedly.embedly'
  
      else:
          # Default to oembed
          finder_name = 'wagtail.wagtailembeds.finders.oembed.oembed'
  
      return import_string(finder_name)
  
subject: Refactor get_default_finder to work without importing finders