clarify code for LocalMessage.equals()

    @Override

    public boolean equals(Object o) {

        if (this == o) return true;

        if (o == null || getClass() != o.getClass()) return false;

        if (!super.equals(o)) return false;

        if (this == o) {

            return true;

        }

        if (o == null || getClass() != o.getClass()) {

            return false;

        }

        if (!super.equals(o)) {

            return false;

        }

        final LocalMessage that = (LocalMessage) o;

        return !(getAccountUuid() != null ? !getAccountUuid().equals(that.getAccountUuid()) : that.getAccountUuid() != null);

        // distinguish by account uuid, in addition to what Message.equals() does above

        String thisAccountUuid = getAccountUuid();

        String thatAccountUuid = ((LocalMessage) o).getAccountUuid();

        return thisAccountUuid != null ? thisAccountUuid.equals(thatAccountUuid) : thatAccountUuid == null;

    }

    @Override