040000 tree 67d4b3f99b5cfb2dc44058bb654ee9f011809073	default
040000 tree aa4f4b057f5dde3fdb054de780ce3ba81969b07e	s3
040000 tree 18330bb1f544b2ed2498525847705c0dd2ef69a0	sample
040000 tree 247a44c3c98c9d8eb736639855b89a059d65ab8c	swift