code: def _substitute_file_uuids_throughout_template(self, template, file_dependencies):
          
          if not isinstance(template, dict):
              # Nothing to do if this is a reference to a previously imported template.
              return
          for input in template.get('inputs', []):
              self._substitute_file_uuids_in_input(input, file_dependencies)
          for step in template.get('steps', []):
              self._substitute_file_uuids_throughout_template(step, file_dependencies)
docs: Anywhere in "template" that refers to a data object but does not 
          give a specific UUID, if a matching file can be found in "file_dependencies",
          we will change the data object reference to use that UUID. That way templates
          have a preference to connect to files nested under their ".dependencies" over
          files that were previously imported to the server.