code: public SourceSchema withRecordColumns(RecordColumn... recordColumns) {
          if (this.recordColumns == null) {
              setRecordColumns(new java.util.ArrayList<RecordColumn>(recordColumns.length));
          }
          for (RecordColumn ele : recordColumns) {
              this.recordColumns.add(ele);
          }
          return this;
      }
docs: <p>
  A list of <code>RecordColumn</code> objects.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRecordColumns(java.util.Collection)} or {@link #withRecordColumns(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param recordColumns
  A list of <code>RecordColumn</code> objects.
  @return Returns a reference to this object so that method calls can be chained together.