1 files changed, 6 insertions, 0 deletions
diff --git a/crates/shirabe/src/downloader/vcs_capable_downloader_interface.rs b/crates/shirabe/src/downloader/vcs_capable_downloader_interface.rs
index dd59d8a..6176704 100644
--- a/crates/shirabe/src/downloader/vcs_capable_downloader_interface.rs
+++ b/crates/shirabe/src/downloader/vcs_capable_downloader_interface.rs
@@ -1 +1,7 @@
 //! ref: composer/src/Composer/Downloader/VcsCapableDownloaderInterface.php
+
+use crate::package::package_interface::PackageInterface;
+
+pub trait VcsCapableDownloaderInterface {
+    fn get_vcs_reference(&self, package: &dyn PackageInterface, path: String) -> Option<String>;
+}