code: public BatchGetQueryExecutionResult withQueryExecutions(QueryExecution... queryExecutions) {
          if (this.queryExecutions == null) {
              setQueryExecutions(new java.util.ArrayList<QueryExecution>(queryExecutions.length));
          }
          for (QueryExecution ele : queryExecutions) {
              this.queryExecutions.add(ele);
          }
          return this;
      }
docs: <p>
  Information about a query execution.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setQueryExecutions(java.util.Collection)} or {@link #withQueryExecutions(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param queryExecutions
  Information about a query execution.
  @return Returns a reference to this object so that method calls can be chained together.