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: user_backend.rb
    path of file: ./repos/mitamae/mrblib/mitamae/inline_backends
    
    the code of the file until where you have to start completion: module MItamae
  module InlineBackends
    cla
    
      def get_passwd_entry(user_name, &block)
        passwd = Etc.getpwnam(user_name)
        if passwd
          output = block.call(passwd)
          Specinfra::CommandResult.new(stdout: output, stderr: '', exit_status: 0)
        else
          Specinfra::CommandResult.new(stdout: '', stderr: '', exit_status: 1)
        end