add v5 new epoch event type

compatibility/src/version_five/mod.rs

@@ -4,6 +4,7 @@ pub mod diem_account_v5;
 pub mod freezing_v5;
 pub mod legacy_address_v5;
 pub mod module_v5;
+pub mod new_epoch_v5;
 pub mod ol_ancestry;
 pub mod ol_cumulative_deposit;
 pub mod ol_receipts;

compatibility/src/version_five/new_epoch_v5.rs

@@ -0,0 +1,29 @@
+use crate::version_five::move_resource_v5::MoveStructTypeV5;
+use anyhow::Result;
+use move_core_types::{ident_str, identifier::IdentStr};
+use serde::{Deserialize, Serialize};
+
+/// Struct that represents a NewEpochEvent.
+#[derive(Debug, Serialize, Deserialize)]
+pub struct NewEpochEventV5 {
+    epoch: u64,
+}
+
+impl NewEpochEventV5 {
+    pub fn new(epoch: u64) -> Self {
+        NewEpochEventV5 { epoch }
+    }
+
+    pub fn epoch(&self) -> u64 {
+        self.epoch
+    }
+
+    pub fn try_from_bytes(bytes: &[u8]) -> Result<Self> {
+        bcs::from_bytes(bytes).map_err(Into::into)
+    }
+}
+
+impl MoveStructTypeV5 for NewEpochEventV5 {
+    const MODULE_NAME: &'static IdentStr = ident_str!("DiemConfig");
+    const STRUCT_NAME: &'static IdentStr = ident_str!("NewEpochEvent");
+}