class method self.new

# File activemodel/lib/active_model/secure_password/argon2_password.rb, line 6
      def initialize
        # Load argon2 gem only when has_secure_password with :argon2 is used.
        # This is to avoid Active Model (and by extension the entire framework)
        # being dependent on a binary library.
        require "argon2"
      rescue LoadError
        warn "You don't have argon2 installed in your application. Please add it to your Gemfile and run bundle install."
        raise
      end