@Nonnull
	private String nextClassName() {
		return "mapped/Class" + classIndex++;
	}
Basic name generator using a given alphabet of characters to generate pseudo-random names with.
Names will always yield the same value for the same input.

@author Matt Coley
recaf-core/src/main/java/software/coley/recaf/services/mapping/gen/naming/IncrementingNameGenerator.java