get_user_cred returns a tuple, including the error message if any
get_user_cred returns a tuple, including the error message if any

GENI-NSF/gram,tcmitchell/geni-tools,ahelsing/geni-tools,plantigrade/geni-tools,GENI-NSF/gram,GENI-NSF/gram,ahelsing/geni-tools,tcmitchell/geni-tools,plantigrade/geni-tools