public void setKey(String key) {
        this.key = key;
    }
<p>
Specifies the key for the condition. Currently the only supported key is <code>aws:PrincipalOrgID</code>.
</p>

@param key
       Specifies the key for the condition. Currently the only supported key is <code>aws:PrincipalOrgID</code>.
aws-java-sdk-events/src/main/java/com/amazonaws/services/cloudwatchevents/model/Condition.java