Update clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I58738190d06bf216a13048d768aa4054d820d2e8
diff --git a/src/method.hpp b/src/method.hpp
index 92d6396..9aa86ba 100644
--- a/src/method.hpp
+++ b/src/method.hpp
@@ -3,6 +3,8 @@
 #include "callback.hpp"
 
 #include <phosphor-logging/log.hpp>
+
+#include <experimental/tuple>
 #include <string>
 #include <tuple>
 
@@ -69,8 +71,7 @@
                const std::string& m) :
         Callback(),
         bus(b), path(p), interface(i), method(m)
-    {
-    }
+    {}
 
     /** @brief Callback interface implementation. */
     void operator()(Context ctx) override = 0;
@@ -103,8 +104,7 @@
            MethodArgs&&... arguments) :
         MethodBase(bus, path, iface, method),
         args(std::forward<MethodArgs>(arguments)...)
-    {
-    }
+    {}
 
     /** @brief Callback interface implementation. */
     void operator()(Context ctx) override