@Override
 public int hashCode() {
   int result = 0;
   result = 31 * result + (id != null ? id.hashCode() : 0);
   result = 31 * result + (template != null ? template.hashCode() : 0);
   return result;
 }
  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    VirtualInstance other = (VirtualInstance) o; // NOPMD

    if (id != null ? !id.equals(other.id) : other.id != null) return false;
    if (template != null ? !template.equals(other.template) : other.template != null) return false;
    return true;
  }