private List<String> getHeaders() { final List<String> headers = new ArrayList<String>();
private List<Object> getHeaders() { final List<Object> headers = new ArrayList<Object>();
    private List<String> getHeaders() {        final List<String> headers = new ArrayList<String>();        headers.add("Nome");        headers.add("Nmero");        headers.add("Categoria");        headers.add("Disciplina");        headers.add("Horas Declaradas");        headers.add("Sumrios nos Turnos");        headers.add("Percentagem nos Turnos");        headers.add("Sumrios na Disciplina");        headers.add("Percentagem na Disciplina");        return headers;    }