Returns default configurations for resources deployed to this group.

		If specified key is not defined returns None.

		# {"cpu":{"inherited":false},"memoryGB":{"inherited":false},"networkId":{"inherited":false},
		# "primaryDns":{"value":"172.17.1.26","inherited":true},"secondaryDns":{"value":"172.17.1.27","inherited":true},
		# "templateName":{"value":"WIN2012DTC-64","inherited":false}}

def Defaults(self,key):
		"""Returns default configurations for resources deployed to this group.

		If specified key is not defined returns None.

		# {"cpu":{"inherited":false},"memoryGB":{"inherited":false},"networkId":{"inherited":false},
		# "primaryDns":{"value":"172.17.1.26","inherited":true},"secondaryDns":{"value":"172.17.1.27","inherited":true},
		# "templateName":{"value":"WIN2012DTC-64","inherited":false}}
		"""

		if not hasattr(self,'defaults'):
			self.defaults = clc.v2.API.Call('GET','groups/%s/%s/defaults' % (self.alias,self.id), session=self.session)
		try:
			return(self.defaults[key]['value'])
		except:
			return(None)