<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get(self, item_name):
 		""" 		Retrieve the value of an option. 		:param str item_name: The name of the option to retrieve. 		:return: The value of *item_name* in the configuration. 		"""

		if self.prefix:
			item_name = self.prefix + self.seperator + item_name
		item_names = item_name.split(self.seperator)
		node = self._storage
		for item_name in item_names:
			node = node[item_name]
		return node