docs: def set(self, name, value):
          """Set an option value.
  
          Args:
              name (str): The name of the option.
              value: The value to set the option to.
  
          Raises:
              AttributeError: If the name is not registered.
              TypeError: If the value is not a string or appropriate native type.
              ValueError: If the value is a string but cannot be coerced.
          """
          if name not in self._options:
  
              raise AttributeError("Option {0} does not exist.".format(name))
  
          return self._options[name].__set__(self, value)