public void setGroupIdentifier(String groupIdentifier) {
        this.groupIdentifier = groupIdentifier;
    }
<p>
Specifies the group to return information for. You can specify the group name, the ARN, or the group ID as the
<code>GroupIdentifier</code>.
</p>

@param groupIdentifier
       Specifies the group to return information for. You can specify the group name, the ARN, or the group ID as
       the <code>GroupIdentifier</code>.
aws-java-sdk-synthetics/src/main/java/com/amazonaws/services/synthetics/model/ListGroupResourcesRequest.java