public boolean wasMapped(@Nonnull String preMappedName) {
		return mappedClasses.containsKey(preMappedName);
	}
@param preMappedName
		Pre-mapping name.

@return {@code true} when the class was affected by the mapping operation.
recaf-core/src/main/java/software/coley/recaf/services/mapping/MappingResults.java