public void setGroup(String group) {
        this.group = group;
    }
<p>
The group to be added or removed. The possible value is <code>all</code>.
</p>

@param group
       The group to be added or removed. The possible value is <code>all</code>.
@see PermissionGroup
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateVolumePermission.java