Formatting processing in VS Code with Red Hat

Hi, I have recently tried using VS Code for processing, but realized there’s no proper formatter for the language. In this issue in TobiahZ’s processing extension, he mentioned that one could use the Red Hat Java extension for formatting. How can I use Red Hat as the default formatter for .pde? Adding "[pde]": {"editor.defaultFormatter": "redhat.java"} to the VS Code setting file doesn’t work.