Is it possible to use integer with a higher precision so that something like this works:

ClassMethodSet9223372036854775807

9223372036854775807
9223372036854775810   // should be 9223372036854775808
0                     // should be 1

The docs say "... However, with extremely large numbers (larger than 9223372036854775807E127) it is not always possible to convert a numeric string to a Decimal value. ..."[0], but operations on numbers bigger than 9223372036854775807 are not working correctly.

[0] https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=GCOS_types#GCOS_types_nonnumasnum_big