text: class Adder {
      constructor(a,b){
      this.a = a;
      this.b = b;
      }
      sum(a,b){
          return(this.a + this.b);
          }
      render(){
          let calculation = <p>The sum of ${this.a} and ${this.b} is ${this.sum()}</p>
          console.log(calculation);
      }
  }
  module.exports = Adder;
  