pub unsafe fn array_get_slice( arg_arraydatum: Datum, arg_nSubscripts: c_int, arg_upperIndx: *mut c_int, arg_lowerIndx: *mut c_int, arg_upperProvided: *mut bool, arg_lowerProvided: *mut bool, arg_arraytyplen: c_int, arg_elmlen: c_int, arg_elmbyval: bool, arg_elmalign: c_char) -> Datum