thegraph: Derive Clone for StoreKey
@@ -5,7 +5,7 @@ use data::store::*;
use util::stream::StreamError;
/// Key by which an individual entity in the store can be accessed.
-#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct StoreKey {
/// Name of the entity type.
pub entity: String,
