package WebService::ForecastIo::DataSpan; use Moose; use MooseX::Types::DateTime; has start_time => ( is => 'ro', isa => 'DateTime', required => 1, ); has stop_time => ( is => 'ro', writer => '_set_stop_time', isa => 'DateTime', required => 1, ); has value => ( is => 'ro', required => 1, ); 1;