public java.util.List<String> getUserIds() {
        if (userIds == null) {
            userIds = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return userIds;
    }
<p>
The Amazon Web Services account IDs. This parameter is valid only when modifying the <code>loadPermission</code>
attribute.
</p>

@return The Amazon Web Services account IDs. This parameter is valid only when modifying the
        <code>loadPermission</code> attribute.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/ModifyFpgaImageAttributeRequest.java