public void setEventArns(java.util.Collection<String> eventArns) {
        if (eventArns == null) {
            this.eventArns = null;
            return;
        }

        this.eventArns = new java.util.ArrayList<String>(eventArns);
    }
<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>
aws-java-sdk-health/src/main/java/com/amazonaws/services/health/model/EventFilter.java