     ///
     /// - Parameter message: Message text to be sent.
     /// - Returns: Returns the created Node ready to be sent.
-    static func standardMesssage(_ message: String) -> Node {
+    static func standardMessage(_ message: String) -> Node {
         /// Create the Node.
         return [
             "text": message.makeNode()

            /// The message object and its text are not empty, and the user does not want to buy anything, so create a reversed message text.
            } else {
                /// Set the response message text.
                response = Messenger.standardMesssage(text.reversed(preserveFormat: true))
            }
            
            /// Creating the response JSON data bytes.

                /// Gwt payload from postback.
                let payload: String = postback["payload"]?.string ?? "No payload provided by developer."
                /// Set the response message text.
                response = Messenger.standardMessage(payload)
            /// Check if the message object is empty.
            } else if message.isEmpty {
                /// Set the response message text.
                response = Messenger.standardMessage("Webhook received unknown event.")
            /// Check if the message text is empty
            } else if text.isEmpty {
                /// Set the response message text.
                response = Messenger.standardMessage("I'm sorry but your message is empty 😢")
            /// The user wants to buy something.
            } else if text.lowercased().range(of: "sell") || text.lowercased().range(of: "buy") || text.lowercased().range(of: "shop") {
                do {
