urbanairship-core/src/main/java/com/urbanairship/push/NamedUser.java
synchronized void disassociateNamedUserIfNull() {
        if (UAStringUtil.equals(getId(), null)) {
            setId(null);
        }
    }
/**
     * Disassociate the named user only if the named user ID is really null.
     */
Disassociate the named user only if the named user ID is really null.
Disassociate the named user only if the named user ID is really null .
synchronized void disassociateNamedUserIfNull() {
        if (UAStringUtil.equals(getId(), null)) {
            setId(null);
        }
    }
synchronized void disassociateNamedUserIfNull ( ) { if ( UAStringUtil . equals ( getId ( ) , null ) ) { setId ( null ) ; } }
Disassociate the named user only if the named user ID is really null.
Disassociate the named user only if the named user ID is really null .