%ROWTYPE as PL/pgsql argument

Can mytable%ROWTYPE be an argument to a function?

Just checking. I tried by got:

ERROR:  parser: parse error at or near "%"


CREATE OR REPLACE FUNCTION testFunc(mytable%ROWTYPE)
RETURNS BOOLEAN AS'
    RETURN TRUE:
END;
' LANGUAGE 'plpgsql' WITH (isstrict);


Richard