AsciiLettersGenerator
RandomStrings.asciiLettersGenerator
RandomStrings.randomAsciiLettersOfLength(java.util.Random, int)
RandomStrings.randomAsciiLettersOfLengthBetween(java.util.Random, int, int)
RandomizedTest.randomAsciiLettersOfLength(int)
RandomizedTest.randomAsciiLettersOfLengthBetween(int, int)