__init__ (
        self,
        name,
        description,
        mandatory,
        longswitch,
        shortswitch=None,
        value=None,
        )

_cooperateWith ( self,  param )

_prompt ( self )

apply ( self,  target )

cooperate ( self,  params )

extrapolateValue ( self,  env )

getDescription ( self )

getInput ( self )

getLongSwitch ( self )

getName ( self )

getValue ( self )

isMandatory ( self )

isSet ( self )

printUsage ( self )

setMandatory ( self,  mandatory )

setName ( self,  name )

setValue ( self,  value )

show ( self )

validate ( self )