@Override
	public synchronized void removeDirectoryTransform(String sourceDir) {
		int txId = userData.startTransaction();
		try {
			userData.removeStringProperty(USER_PATH_TRANSFORM_PREFIX + sourceDir);
		}
		finally {
			userData.endTransaction(txId);
		}
		pathMap.remove(sourceDir);
	}
Throws an {@link IllegalArgumentException} if {@code directory} is not
a valid, normalized directory path (with forward slashes).
@param directory path to validate
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/sourcemap/UserDataPathTransformer.java