Method appendLogs

ZezeJava/ZezeJavaTest/src/SimpleRaft/Raft.java:56–56

(@NotNull Log @NotNull [] logs)

		boolean appendLog(@NotNull Log log); // return false if this log(key) is already appended

		void appendLogs(@NotNull Log @NotNull [] logs); // ignore already appended log(key)s

		void truncateLogs(long logCount);