040000 tree 07ff7b01229d13c6eea1181628a699be85fc45d4	java
040000 tree 4bc075e30aa9a1cc222d8a7e2e70cca287cb1164	kotlin
040000 tree 9d56764b7abbffcbaae5c8b3dd98f6b080992d24	multi-language
040000 tree 3a4da96baf880310a8ec8ad477a41dd03268cd3f	notebooks