parser.add_argument('-t','--type',dest='type',action='store',required=True,choices=['method','config'],help='Type of entity to modify: either method or config')
parser.add_argument('-r','--access_level',dest='access_level',action='store',choices=['OWNER','READER'],required=True,help='Access level to give each user in the file.')
parser.add_argument('-f','--input_file',dest='input_file',action='store',required=True,help='Input file containing one email address per line.')
parser.add_argument('-fcu','--firecloud_user',dest='firecloud_user',action='store',required=True,help='Your firecloud user id.')