docs: def parse_limits_list(path, limits):
      """Parse a structured list of flux limits as obtained from a YAML file
  
      Yields tuples of reaction ID, lower and upper flux bounds. Path can be
      given as a string or a context.
      """
  
      context = FilePathContext(path)
  
      for limit_def in limits:
          if 'include' in limit_def:
              include_context = context.resolve(limit_def['include'])
              for limit in parse_limits_file(include_context):
                  yield limit
          else:
              yield parse_limit(limit_def)