MassCascade Nodes?

I am interested in LCMS analysis. This paper highlights a plug-in for KNIME which I cannot find anywhere: MassCascade: Visual Programming for LC-MS Data Processing in Metabolomics

I am assuming it must no longer be supported. However, it seems like the author’s repository for what he had created in KNIME is still available. These are all JAVA files, not jar. How could I make these usable in KNIME?

You can also look here for example

Yes, that example uses the nodes I need.