public void addToPks(ColumnInfo elem) {
    if (this.pks == null) {
      this.pks = new java.util.ArrayList<ColumnInfo>();
    }
    this.pks.add(elem);
  }
Returns true if field columns is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/Schema.java