Vraptor: LinkTo não coloca os parametros

<c:forEach items="${studentList}" var="student">
<a class="link-button edit" href="${linkTo[StudentController].maintain[student]}"><span class="ui-icon ui-icon-pencil"></span></a>
</c:forEach>

public Student maintain(Student student) {
    ...
		
		Student studentFull = null;
		if (student != null && student.getId() != null){
			studentFull = business.find(student.getId());
		}
		return studentFull;
	}