Get disk by providing mount point or ID

		If key is not unique and finds multiple matches only the first
		will be returned

def Get(self,key):
		"""Get disk by providing mount point or ID

		If key is not unique and finds multiple matches only the first
		will be returned
		"""

		for disk in self.disks:
			if disk.id == key:  return(disk)
			elif key in disk.partition_paths:  return(disk)