Inconsistency with LIKE and SIMILAR TO

Hello.

Operators LIKE and SIMILAR TO work differently
This query works ok.:

SELECT *
FROM www.test
WHERE expr like any (ARRAY['a','b']);

But this not work:

SELECT *
FROM www.test
WHERE expr similar to any (ARRAY['a','b']);

ERROR: syntax error at or near "any"
LINE 3: WHERE expr similar to any (ARRAY['a','b']);

Is this shouldn't works ?

pasman