The formatter doesn't handle some blocks correctly

[Boiethios]

Describe the bug
Some blocks like BEGIN/END or IF/END IF are not handled.

To Reproduce
This code is formatted like that:

CREATE OR REPLACE PROCEDURE lock_object(
        IN obj_uid UUID,
        IN id_user VARCHAR(255)
    ) AS $$
DECLARE found_id_user VARCHAR(255);

BEGIN found_id_user := (
    SELECT locked_objects.id_user
    FROM locked_objects
    WHERE locked_objects.uid = obj_uid
);

IF id_user <> found_id_user THEN raise exception 'The object % is already locked by someone else',
obj_uid;

END IF;

UPDATE locked_objects
SET instant = CURRENT_TIMESTAMP
WHERE uid = obj_uid;

ELSE
INSERT INTO locked_objects (uid, id_user)
VALUES (obj_uid, id_user);

END IF;

COMMIT;

END;

$$ LANGUAGE plpgsql;

Expected behavior
It should look something like that:

CREATE OR REPLACE PROCEDURE lock_object(
        IN obj_uid UUID,
        IN id_user VARCHAR(255)
    ) AS $$
DECLARE
    found_id_user VARCHAR(255);
BEGIN
    found_id_user := (
        SELECT locked_objects.id_user
        FROM locked_objects
        WHERE locked_objects.uid = obj_uid
    );

    IF found_id_user IS NOT NULL THEN
        IF id_user <> found_id_user THEN
            raise exception 'The object % is already locked by someone else', obj_uid;
        END IF;

        UPDATE locked_objects
        SET instant = CURRENT_TIMESTAMP
        WHERE uid = obj_uid;

    ELSE
        INSERT INTO locked_objects (uid, id_user)
        VALUES (obj_uid, id_user);

    END IF;

    COMMIT;
END;
$$ LANGUAGE plpgsql;

[skellogg]

I find the same...

formatted output of test:

SELECT line
FROM tsttable IF(@id <> 0) BEGIN
INSERT INTO tsttable(line1, line2)
SELECT line1,
line2
FROM tsttbl2
END