protected void visitFile(@Nonnull DirectoryPathNode directoryPath, @Nonnull FileInfo fileInfo) {
		FilePathNode filePath = directoryPath.child(fileInfo);
		WorkspaceTreeNode.getOrInsertIntoTree(this, filePath, true);
	}
Adds the given file to the tree.

@param directoryPath
		Path of the file's containing directory.
@param fileInfo
		File to insert into the tree.
recaf-ui/src/main/java/software/coley/recaf/ui/control/tree/WorkspaceRootTreeNode.java