code: public BatchMeterUsageRequest withUsageRecords(UsageRecord... usageRecords) {
          if (this.usageRecords == null) {
              setUsageRecords(new java.util.ArrayList<UsageRecord>(usageRecords.length));
          }
          for (UsageRecord ele : usageRecords) {
              this.usageRecords.add(ele);
          }
          return this;
      }
docs: <p>
  The set of UsageRecords to submit. BatchMeterUsage accepts up to 25 UsageRecords at a time.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUsageRecords(java.util.Collection)} or {@link #withUsageRecords(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param usageRecords
  The set of UsageRecords to submit. BatchMeterUsage accepts up to 25 UsageRecords at a time.
  @return Returns a reference to this object so that method calls can be chained together.