### Question:
XsuaaToken extends Jwt implements Token { @Override public String getAdditionalAuthAttribute(String attributeName) { return getStringAttributeFromClaim(attributeName, CLAIM_ADDITIONAL_AZ_ATTR); } protected  XsuaaToken(Jwt jwt); @Override Collection<? extends GrantedAuthority> getAuthorities(); @Override Date getExpirationDate(); @Override Instant getExpiration(); @Override String getPassword(); @Override String getUsername(); @Override boolean isAccountNonExpired(); @Override boolean isAccountNonLocked(); @Override boolean isCredentialsNonExpired(); @Override boolean isEnabled(); @Nullable static String getUniquePrincipalName(String origin, String userLoginName); @Override @Nullable String getLogonName(); @Override @Nullable String getClientId(); @Override String getGivenName(); @Override @Nullable String getFamilyName(); @Override String getEmail(); @Override String getOrigin(); @Override String getGrantType(); @Override String getSubaccountId(); @Override String getZoneId(); @Override String getSubdomain(); @Override String toString(); @Nullable @Override String[] getXSUserAttribute(String attributeName); @Override String getAdditionalAuthAttribute(String attributeName); @Override String getCloneServiceInstanceId(); @Override String getAppToken(); @Override Collection<String> getScopes(); boolean hasClaim(String claim);  }### Answer:
@Test public void getSomeAdditionalAttributeValueFromAuthorizationAttr() { claimsSetBuilder.claim(XsuaaToken.CLAIM_ADDITIONAL_AZ_ATTR, new AdditionalAuthorizationAttrClaim()); token = createToken(claimsSetBuilder); assertThat(token.getAdditionalAuthAttribute("external_group"), is("domain\\group1")); }