Method checks availability for free slot. It returns future, when slot will be available, then future will be resolved.
To install WebService::Async::CustomerIO, copy and paste the appropriate command in to your terminal.
cpanm
cpanm WebService::Async::CustomerIO
CPAN shell
perl -MCPAN -e shell install WebService::Async::CustomerIO
For more information on module installation, please visit the detailed CPAN module installation guide.