see MDN for more well-known symbols: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#Well-known_symbols
class Blog {
}
let b = new Blog()
console.log( blog.toString() );
// [object Object]
Blog.prototype[Symbol.toStringTag] = 'My Awesome Blog Class';
blog.toString()
// "[object My Awesome Blog Class]"