How to run with algoId = ts*?

[jhlinplus]

Hi!

I was trying to use the following command to run the TS algo

tetrad.run(algoId = 'ts-gfci', dfs = df, scoreId = 'sem-bic', dataType = 'continuous',
           maxDegree = -1, faithfulnessAssumed = True, verbose = True)

but encountered the following error msg:

$$$$$ Entering returnSimilarPairs method with x,y = X22, X12                                           
Exception in thread "Thread-1" java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 0 
        at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)                
        at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)    

After some search, according to this thread (cmu-phil/tetrad#855) it seems to suggest that for ts data a prior knowledge is required. However, it's unclear to me what data structure is expected -- for both the input df (should we expand the original time series with their time-lags in the columns as well?) and the priorknowledge.

I am wondering if there is any sample code (similar to the ones for running gfci) that elaborates how to run when algoId = ts*?

Thanks!