@Override
  public java.lang.String toString() {
    java.lang.StringBuilder sb = new java.lang.StringBuilder("ArrayData(");
    boolean first = true;

    sb.append("rows:");
    sb.append(this.rows);
    first = false;
    if (!first) sb.append(", ");
    sb.append("cols:");
    sb.append(this.cols);
    first = false;
    if (!first) sb.append(", ");
    sb.append("data:");
    if (this.data == null) {
      sb.append("null");
    } else {
      sb.append(this.data);
    }
    first = false;
    sb.append(")");
    return sb.toString();
  }
@Override
  public java.lang.String toString()