public void step() {
    if (body == null || body.length == 0 || index < 0 || index >= body.length) {
      return;
    }
    body[index++].step();
  }
public void step() {
    if (body == null || body.length == 0 || index < 0 || index >= body.length) {
      return;
    }
    body[index++].step();
  }
public void step ( ) { if ( body == null || body . length == 0 || index < 0 || index >= body . length ) { return ; } body [ index ++ ] . step ( ) ; }
Performs a single step of this plan, i.e., progresses this intention.
Performs a single step of this plan i . e . progresses this intention .