How to generate a VK keyboard?

Question

API

There is a VK keyboard, which is generated as follows:

var btn =Keyboard.builder()
      .textButton({
        label: 'Баланс',
        payload: {
          command: 'bal'
        }
      })
      .row()
      .textButton({
        label: 'хочу + 100р',
        payload: {
          command: 'add_100'
        }
      })
      .row()
      .textButton({
        label: 'хочу - 100р',
        payload: {
          command: 'withdrow_100'
        },
color: Keyboard.PRIMARY_COLOR
      })
      .textButton({
        label: 'Профиль',
        payload: {command: 'profile'},
color: Keyboard.PRIMARY_COLOR
      });

I thought about it and realized that it is possible to make a function that simplifies this. At the input, it receives an array of the following form:

var button1 = ["Баланс","bal",Keyboard.PRIMARY_COLOR];
var button2 = ["Баланс2","bal2",Keyboard.PRIMARY_COLOR];
var button3 = ["Баланс3","bal3",Keyboard.PRIMARY_COLOR];
var btn=some_function();

That is, it is comparable to the code:

var btn =Keyboard.builder()
      .textButton({
        label: 'Баланс',
        payload: {
          command: 'bal1'
        },
color: Keyboard.PRIMARY_COLOR
      })
      .textButton({
        label: 'Баланс2',
        payload: {
          command: 'bal2'
        },
color: Keyboard.PRIMARY_COLOR
      })
      .row()
      .textButton({
        label: 'Баланс2',
        payload: {command: 'bal3'},
color: Keyboard.PRIMARY_COLOR
      });

But I don’t understand how to do this at all ((Tell me where to dig? Or maybe you can tell part of the function