Function pgx_pg_sys::makeConst

pub unsafe fn makeConst(
    arg_consttype: Oid, 
    arg_consttypmod: int32, 
    arg_constcollid: Oid, 
    arg_constlen: c_int, 
    arg_constvalue: Datum, 
    arg_constisnull: bool, 
    arg_constbyval: bool
) -> *mut Const