I'm wondering if it's possible anyhow to use "Input Files" node (from GenericKnimeNodes) without any input files. In my workflow, I use several of nodes of this kind, and the logic of the workflow implies that some input datasets can be empty. However, "Input files" seems to be not usable if I don't select any file. Are there any alternatives to this? Maybe, there's something inside some KNIME extension. One of the main requirements is the presense of "Browse" button or anything else that allows browsing through file system instead of typing paths manually.