ldap/src/main/java/org/springframework/security/ldap/userdetails/LdapAuthority.java
public List<String> getAttributeValues(String name) {
		List<String> result = null;
		if (attributes != null) {
			result = attributes.get(name);
		}
		if (result == null) {
			result = Collections.emptyList();
		}
		return result;
	}
public List<String> getAttributeValues(String name) {
		List<String> result = null;
		if (attributes != null) {
			result = attributes.get(name);
		}
		if (result == null) {
			result = Collections.emptyList();
		}
		return result;
	}
Returns the values for a specific attribute

@param name the attribute name
@return a String array, never null but may be zero length