docs: def set(self, item_name, item_value):
  		"""
  		Sets the value of an option in the configuration.
  
  		:param str item_name: The name of the option to set.
  		:param item_value: The value of the option to set.
  		"""
  		if self.prefix:
  			item_name = self.prefix + self.seperator + item_name
  		item_names = item_name.split(self.seperator)
  		item_last = item_names.pop()
  		node = self._storage
  		for item_name in item_names:
  			if not item_name in node:
  				node[item_name] = {}
  			node = node[item_name]
  		node[item_last] = item_value
  		return