IsXsUnsignedLong🔗
Check that
text is a valid xs:unsignedLong.
We check that the text matches the pattern of xs:unsignedLong, and
that the number is within the range of xs:unsignedLong.
Code
return matches_xs_unsigned_long(text) and _is_integer_in_range(
text, "0", "18446744073709551615"
)