code: def validate_resources(self, folder, resources):
          
          self.validate_files_exist(folder, resources)
          self.validate_no_duplicate_paths(resources)
docs: validate resources is a wrapper to validate the existence of files
              and that there are no duplicates for a folder and set of resources.
  
              Parameters
              ==========
              folder: the folder to validate
              resources: one or more resources to validate within the folder