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: build_task.rb
    path of file: ./repos/helix/ruby/lib/helix_runtime
    
    the code of the file until where you have to start completion: require 'rake/tasklib'
require 'helix_runtime'

module HelixRuntime
  class BuildTask < Rake::TaskLib

    def self.delegate_attr(getter, to:)
      setter = "#{getter}="
      defin
    
    def initialize(deprecated_name = nil)
      yield self if block_given?

      if deprecated_name
        warn "DEPRECATION WARNING: Passing a project name to the Helix build " \
          "task (`HelixRuntime::BuildTask.new(#{deprecated_name.inspect})`) " \
          "is unnecessary, as we now automatically detect the project name " \
          "from your `Cargo.toml`.\n\n"
      end