public void addClass(@Nonnull String oldName, @Nonnull String newName) {
		if (Objects.equals(oldName, newName)) return; // Skip identity mappings
		classes.put(oldName, new ClassMapping(oldName, newName));
	}
@param oldName
		Pre-mapping name.
@param newName
		Post-mapping name.
recaf-core/src/main/java/software/coley/recaf/services/mapping/IntermediateMappings.java