code: def get_institution_url(base_url):
      
      base_url = base_url.rstrip('/')
      index = base_url.find('/api/v1')
  
      if index != -1:
          return base_url[0:index]
  
      return base_url
docs: Clean up a given base URL.
  
      :param base_url: The base URL of the API.
      :type base_url: str
      :rtype: str