Gem::SpecificationRecord#stubs

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/specification_record.rb, line 77
def stubs
  @stubs ||= begin
    pattern = "*.gemspec"
    stubs = stubs_for_pattern(pattern, false)

    @stubs_by_name = stubs.select {|s| Gem::Platform.match_spec? s }.group_by(&:name)
    stubs
  end
end