Implement SqlTranslatable for TableAmRoutine

[dpxcc]

Currently

#[pg_extern(sql = "
CREATE FUNCTION xxx_handler(internal) RETURNS table_am_handler LANGUAGE C STRICT AS 'MODULE_PATHNAME';
CREATE ACCESS METHOD xxx TYPE TABLE HANDLER xxx_handler;
")]
fn xxx_handler(_fcinfo: pg_sys::FunctionCallInfo) -> PgBox<pg_sys::TableAmRoutine> {
    let mut amroutine =
        unsafe { PgBox::<pg_sys::TableAmRoutine>::alloc_node(pg_sys::NodeTag::T_TableAmRoutine) };

    ...

    amroutine.into_pg_boxed()
}

throws error saying that SqlTranslatable is not implemented for TableAmRoutine

[eeeebbbbrrrr]

Thanks!