public List<String> getCertifiedRoles() { List<String> result = new ArrayList<String>(); List<XmlCertifiedRole> certifiedRoles = signature.getCertifiedRoles(); if (Utils.isCollectionNotEmpty(certifiedRoles)) { for (XmlCertifiedRole certifiedRole : certifiedRoles) { result.add(certifiedRole.getCertifiedRole()); } } return result; }