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: formatter_headers.rb
    path of file: ./repos/lecter/lib/lecter
    
    the code of the file until where you have to start completion: # frozen_stri
    
    def call
      @result = dirty_headers
                .split(',')
                .map { |header_with_value| header_with_value.split('=') }
                .to_h
    rescue StandardError
      @error_message = WRONG_HEADERS_MSG
      false
    end