INOUT PARAMETERS WITH RETURN TABLES IN FUNCTION

I'm trying to migration to PostgreSql from SQL Server. I have Stored
Procedures what have output parameters and return tables. How can i do both
together.

Its like ;

CREATE or replace FUNCTION public."test" (INOUT "x" integer, INOUT "y"
character varying(36))

RETURNS TABLE (
"id" integer,
"filesize" character varying(36)
)
AS $$
BEGIN
x=6;
RETURN QUERY
SELECT * FROM public."tbl_employees" ;

END;
$$ LANGUAGE plpgsql;

I can not create that because of inout parameters.
Another place;

do $$
DECLARE b integer = 1;
DECLARE d integer = 2 ;
BEGIN
select * from public."test"();
END;
$$;

Anybody have an idea ?