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: replacement_rule.rb
    path of file: ./repos/newrelic-ruby-agent/lib/new_relic/agent/rules_engine
    
    the code of the file until where you have to start completion: # This file is distributed un
    
        def matches?(string)
          if @each_segment
            string.split(SEGMENT_SEPARATOR).any? do |segment|
              segment.match(@match_expression)
            end
          else
            string.match(@match_expression)
          end