text: export class Animal {
    constructor(name) {
      this.name = name;
    }
    greeting(sound) {
      return `A ${this.name} ${sound}`;
    }
    static echo(input) {
      console.log(input);
    }
  }
  export class Canine extends Animal {
    constructor() {
      super("canine");
    }
    static echo() {
      super.echo("bow wow");
    }
  }
  