class Gem::RequestSet::Lockfile

def to_s
  out = []
  groups = spec_groups
  add_PATH out, groups.delete(Gem::Resolver::VendorSpecification) { [] }
  add_GIT out, groups.delete(Gem::Resolver::GitSpecification) { [] }
  add_GEM out, groups
  add_PLATFORMS out
  add_DEPENDENCIES out
  out.join "\n"
end