1 files changed, 5 insertions, 1 deletions
diff --git a/crates/shirabe/src/dependency_resolver/operation/operation_interface.rs b/crates/shirabe/src/dependency_resolver/operation/operation_interface.rs
index 99a40c4..d93bd0f 100644
--- a/crates/shirabe/src/dependency_resolver/operation/operation_interface.rs
+++ b/crates/shirabe/src/dependency_resolver/operation/operation_interface.rs
@@ -1,9 +1,13 @@
 //! ref: composer/src/Composer/DependencyResolver/Operation/OperationInterface.php
 
-pub trait OperationInterface {
+pub trait OperationInterface: std::fmt::Debug {
     fn get_operation_type(&self) -> String;
 
     fn show(&self, lock: bool) -> String;
 
     fn to_string(&self) -> String;
+
+    fn clone_box(&self) -> Box<dyn OperationInterface> {
+        todo!()
+    }
 }