code: public void setEventArns(java.util.Collection<String> eventArns) {
          if (eventArns == null) {
              this.eventArns = null;
              return;
          }
  
          this.eventArns = new java.util.ArrayList<String>(eventArns);
      }
docs: <p>
  A list of event ARNs (unique identifiers). For example:
  <code>"arn:aws:health:us-east-1::event/EC2/EC2_INSTANCE_RETIREMENT_SCHEDULED/EC2_INSTANCE_RETIREMENT_SCHEDULED_ABC123-CDE456", "arn:aws:health:us-west-1::event/EBS/AWS_EBS_LOST_VOLUME/AWS_EBS_LOST_VOLUME_CHI789_JKL101"</code>
  </p>
  
  @param eventArns
  A list of event ARNs (unique identifiers). For example:
  <code>"arn:aws:health:us-east-1::event/EC2/EC2_INSTANCE_RETIREMENT_SCHEDULED/EC2_INSTANCE_RETIREMENT_SCHEDULED_ABC123-CDE456", "arn:aws:health:us-west-1::event/EBS/AWS_EBS_LOST_VOLUME/AWS_EBS_LOST_VOLUME_CHI789_JKL101"</code>