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: spec_helper.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/therubyracer-0.12.3/spec
    
    the code of the file until where you have to start completion: require 'v8'

def run_v8_gc
    
  def bootstrap_v8_context
    V8::C::Locker() do
      V8::C::HandleScope() do
        @cxt = V8::C::Context::New()
        begin
          @cxt.Enter()
          yield
        ensure
          @cxt.Exit()
        end
      end
    end