public void forEach(Insn.Visitor visitor) {
    int sz = size();

    for (int i = 0; i < sz; i++) {
      get(i).accept(visitor);
    }
  }
Visits each instruction in the list, in order.

@param visitor {@code non-null;} visitor to use
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/code/InsnList.java