text: /**
   * MyLSystem
   * @constructor
   * @param scene - Reference to MyScene object
   */
  class MyLSPlant extends MyLSystem {
  	constructor(scene) {
          super(scene);
          this.init();
      }
  
      init(){
          // cria o lexico da gramática
          this.initGrammar()
  
      }
  
      // cria o lexico da gramática
      initGrammar(){
          this.grammar = {
              "F": new MyBranch(this.scene),
              "X": new MyLeaf(this.scene)
          };
      };
  }