class Bundler::Source::Rubygems

def fetch_specs
  index = Index.new
  Bundler.ui.info "Fetching source index from #{uri}"
  (main_specs + prerelease_specs).each do |name, version, platform|
    next unless Gem::Platform.match(platform)
    spec = RemoteSpecification.new(name, version, platform, @uri)
    spec.source = self
    index << spec
  end
  index.freeze
end