group template functions for readability

protocol/esta/rdm/message.h

@@ -77,6 +77,12 @@ struct Message
   uint8_t length() const;
   uint16_t checksum() const;
   bool requiredLength(const size_t length, MsgPtr response) const;
+
+private:
+  std::vector<uint8_t> data_;
+  void writeDiscBranch(std::vector<uint8_t> &data) const;
+
+public: // templates
   /**
    * @brief appendData
    * @param val
@@ -86,6 +92,7 @@ struct Message
   {
     Message::writeType<T>(data_, val);
   }
+
   /**
    * @brief readType
    * @param vect
@@ -103,6 +110,7 @@ struct Message
         data[i] = vect[start + i];
     return ret;
   }
+
   /**
    * @brief writeType
    * @param data
@@ -116,10 +124,6 @@ struct Message
       data.push_back(raw[i]);
   }
 
-private:
-  std::vector<uint8_t> data_;
-  void writeDiscBranch(std::vector<uint8_t> &data) const;
-
   template<typename T>
   uint16_t addSum_(uint16_t sum, const T val) const
   {