docs: public List<Role> findAllRoles() {
          List<Role> list = new ArrayList<>();
          List<String> roleStrings;
          try {
              roleStrings = readLines(rolesFile);
          } catch (IOException e) {
              throw new FileBasedRuntimeException(e);
          }
  
          for (String roleString : roleStrings) {
              if (StringUtils.isNotBlank(roleString)) {
                  String[] substrings =
                      StringUtils.splitByWholeSeparator(roleString, Configuration.get().getAssociationSeparator());
                  if (substrings.length < 1 || StringUtils.isBlank(substrings[0])) {
                      continue;
                  }
                  Role role = new Role(substrings[0]);
                  if (substrings.length > 1) {
                      role.setRoles(Arrays.asList(StringUtils.splitByWholeSeparator(substrings[1], Configuration.get()
                              .getValueSeparator())));
                  }
                  list.add(role);
              }
          }
  
          return list;
      }