To install Catalyst::TraitFor::Request::ContentNegotiationHelpers, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Catalyst::TraitFor::Request::ContentNegotiationHelpers
CPAN shell
perl -MCPAN -e shell install Catalyst::TraitFor::Request::ContentNegotiationHelpers
For more information on module installation, please visit the detailed CPAN module installation guide.