This method is only available on newer versions.
The first available version (v2_6_3) is shown here.
install(options)
private
the order that the resolver provides is significant, since dependencies
might affect the installation of a gem. that said, it’s a rare situation
(other than rake), and parallel installation is SO MUCH FASTER. so we let
people opt in.
# File lib/bundler/installer.rb, line 194
def install(options)
force = options["force"]
jobs = installation_parallelization(options)
install_in_parallel jobs, options[:standalone], force
end