@Nullable
	public ClassPathNode getPreMappingPath(@Nonnull String postMappingName) {
		String preMappedName = getPreMappingName(postMappingName);
		return preMappedName == null ? null : preMappingPaths.get(preMappedName);
	}
@param postMappingName
		Post-mapping name.

@return Path node of pre-mapped class.
May be {@code null} if no the given post-mapped name was not present in the mapping operation output.
recaf-core/src/main/java/software/coley/recaf/services/mapping/MappingResults.java