040000 tree d53d8f5984b5b3e1ecaf4fc5e3552e0f74c0519e	abstract_class
040000 tree 1099700d979a33fe625d48d90170e6361748251b	const_constructors
040000 tree 47655fad21dd26aa0787c064f30b4fe0520aed38	explicit_language_version
040000 tree 36d20c37944ae8ece904b74eaae0b1edb75e73bf	explicit_language_version_newer_patch
040000 tree 0eb0930ee5af65537cfbcfa703b7fee1c2acce64	explicit_language_version_older_patch
040000 tree b7f06dad3a5f9b1b16b9105d4f55a1fe77074498	initializing_formals
100644 blob a45008a683660b4beb8d2bc1ec17dffd22bd479a	marker.options