public void setFileSelectionMode(GhidraFileChooserMode mode) {
		this.selectionMode = mode;
	}
Sets the <code>GhidraFileChooser</code> to allow the user to just
select files, just select
directories, or select both files and directories.  The default is
<code>GhidraFileChooserMode.FILES_ONLY</code>.

@param mode the type of files to be displayed
@exception IllegalArgumentException  if <code>mode</code> is an
				illegal Dialog mode
Ghidra/Framework/Docking/src/main/java/docking/widgets/filechooser/GhidraFileChooserPanel.java