def package(group_name, package_name, package_version)
      RubyAem::Resources::Package.new(@client, group_name, package_name, package_version)
    end
def package(group_name, package_name, package_version)
      RubyAem::Resources::Package.new(@client, group_name, package_name, package_version)
    end
Create a package instance.

 @param group_name the group name of the package, e.g. somepackagegroup
 @param package_name the name of the package, e.g. somepackage
 @param package_version the version of the package, e.g. 1.2.3
 @return new RubyAem::Resources::Package instance