You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: eucalyptus.rb
    path of file: ./repos/ohai/lib/ohai/plugins
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
#
# Author:: Tim Dysinger (<tim@dysinger.net>)
# Author:: Benjamin Black (<bb@chef.io>)
# Author:: Christopher Brow
    
  def has_euca_mac?
    network[:interfaces].each_value do |iface|
      mac = get_mac_address(iface[:addresses])
      if MAC_MATCH.match?(mac)
        logger.trace("Plugin Eucalyptus: has_euca_mac? == true (#{mac})")
        return true
      end
    end