class Bundler::SourceList

def add_rubygems_remote(uri)
  if Bundler.feature_flag.lockfile_uses_separate_rubygems_sources?
    return if Bundler.feature_flag.disable_multisource?
    raise InvalidOption, "`lockfile_uses_separate_rubygems_sources` cannot be set without `disable_multisource` being set"
  end
  @rubygems_aggregate.add_remote(uri)
  @rubygems_aggregate
end