fn increment_utf8(data: &str) -> Option<String>Expand description
Increment a UTF8 string by one, returning None if it can’t be incremented.
This makes it so that the returned string will always compare greater than the input string
or any other string with the same prefix.
This is necessary since the statistics may have been truncated: if we have a min statistic
of “fo” that may have originally been “foz” or anything else with the prefix “fo”.
E.g. increment_utf8("foo") >= "foo" and increment_utf8("foo") >= "fooz"
In this example `increment_utf8(“foo”) == “fop”