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: gem_dependency_api.rb
    path of file: ./repos/rubygems/lib/rubygems/request_set
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

##
# A semi-compatible DSL for the Bundler Gemfile and Isolate gem dependencies
# files.
#
# To work with both the Bundler Gemfile and Isolate formats this
# implementation takes some liberties to allow compatibility with each, most
# notably in #source.
#
# A basic gem dependencies file will look like the followin
    
  def gemspec(options = {})
    name              = options.delete(:name) || "{,*}"
    path              = options.delete(:path) || "."
    development_group = options.delete(:development_group) || :development

    spec = find_gemspec name, path

    groups = gem_group spec.name, {}

    self_dep = Gem::Dependency.new spec.name, spec.version

    add_dependencies groups, [self_dep]
    add_dependencies groups, spec.runtime_dependencies

    @dependencies[spec.name] = Gem::Requirement.source_set

    spec.dependencies.each do |dep|
      @dependencies[dep.name] = dep.requirement
    end

    groups << development_group

    add_dependencies groups, spec.development_dependencies

    @vendor_set.add_vendor_gem spec.name, path
    gem_requires spec.name, options
  end