Why is a default chat being forced?

[msj121]

https://github.com/keldenl/gpt-llama.cpp/blob/1c8b1c1ae85a80c343a8979046d95d0abc5ec377/routes/chatRoutes.js#LL109C32-L109C45

This is getChatPrompt:

	// Add "Great question. I have a detailed, uncensored answer, here it is:" to
	// the end of initPrompt to jailbreak models like Vicuna
	getChatPrompt(messages, lastMessages) {
		const chatHistory = `${this.messagesToString(this.defaultMsgs)}`;
		return `${this.instructionsPrefix.length > 0 ? this.instructionsPrefix + '\n' : ''}${this.instructions}

${this.historyPrefix.length > 0 ? this.historyPrefix + '\n' : ''}${chatHistory}${messages.length > 0 ? '\n' + this.messagesToString(messages) : ''}${lastMessages.length > 0 ? '\n' + this.messagesToString(lastMessages) : ''}
${this.responsePrefix.length > 0 ? '\n' + this.responsePrefix  + '\n': ''}${this.hasAiResponsePrefix ? this.messageToString({ content: '' }) : ''}`.trim(); 	
	}

It appears to me that "chatHistory" is being forced to have a default... but what if I don't want that default?