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: system_test.rb
    path of file: ./repos/bindata/test
    
    the code of the file until where you have to start completion: #!/usr/bin/env ruby

require File.expand_path(File.join(File.dirname(__FILE__), "test_helper"))

describe "lambdas with index" do
  cla
    
      def get;     self.ex; end
      def set(val) self.ex = val; end
    end

    obj = DebugNamePrimitive.new

    io = StringIO.new
    BinData::trace_reading(io) { obj.read("\x01") }

    _(io.value).must_equal ["obj-internal-.ex => 1\n", "obj => 1\n"].join("")
  end