old_contents: //This is An OOP Model of a bank account
  //OOP is suitable for when you have relatively 
  //few operations and and large data sets
  
  
  //Base account model implements the standard features 
  
  class Account {
  	constructor(name, age, amount) {
  		this._name = name;
  		this._age = age;
  		this._balance = amount;	
  	}
  }
  
  
  //export an instance 
  module.exports = {Ade : new Account("Adeoluwa Adejumo", 5, 5000)} 
new_contents: //This is An OOP Model of a bank account
  //OOP is suitable for when you have relatively 
  //few operations and and large data sets
  
  
  //Base account model implements the standard features 
  
  class Account {
  	constructor(name, age, amount) {
  		this._name = name;
  		this._age = age;
  		this._balance = amount;	
  	}
  
  	//deposit method for account class
  	deposit(amount){
  		this._balance += amount;
  		return "TRANSACTION SUCCESSFUL: You have deposited " + amount;
  	}
  }
  
  
  //export an instance 
  module.exports = {Ade : new Account("Adeoluwa Adejumo", 5, 5000)} 
subject: create deposit method for account class