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

    sb.append("columns:");
    if (this.columns == null) {
      sb.append("null");
    } else {
      sb.append(this.columns);
    }
    first = false;
    if (isSetPks()) {
      if (!first) sb.append(", ");
      sb.append("pks:");
      if (this.pks == null) {
        sb.append("null");
      } else {
        sb.append(this.pks);
      }
      first = false;
    }
    if (isSetPartitionColumns()) {
      if (!first) sb.append(", ");
      sb.append("partitionColumns:");
      if (this.partitionColumns == null) {
        sb.append("null");
      } else {
        sb.append(this.partitionColumns);
      }
      first = false;
    }
    if (isSetSortColumns()) {
      if (!first) sb.append(", ");
      sb.append("sortColumns:");
      if (this.sortColumns == null) {
        sb.append("null");
      } else {
        sb.append(this.sortColumns);
      }
      first = false;
    }
    sb.append(")");
    return sb.toString();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/Schema.java