refactor out checking arg count and getting slice cred and checking slice expiration into a helper method. Make that helper continue on input errors in dev mode
refactor out checking arg count and getting slice cred and checking slice expiration into a helper method. Make that helper continue on input errors in dev mode

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