public boolean isPendingUninstall() {
		if (installDir == null) {
			return false;
		}

		if (Application.inSingleJarMode()) {
			return false; // can't uninstall from single jar mode
		}

		File f = new File(installDir, ModuleUtilities.MANIFEST_FILE_NAME_UNINSTALLED);
		return f.exists();
	}
Returns true if this extension is marked to be uninstalled.  The contents of the extension
still exist and the tool may still be using the extension, but on restart, the extension will
be removed.

@return true if marked for uninstall
Ghidra/Framework/Generic/src/main/java/ghidra/util/extensions/ExtensionDetails.java