<xs:attribute name="alias" type="xs:string" use="optional">
                     <xs:annotation>
                         <xs:documentation>
                             The alias of the entry to use from the keystore, if specified all remaining
                             entries in the keystore will be ignored.
                             Note: The use of aliases is only available for JKS based stores, for other store types this will be ignored.
                         </xs:documentation>
                     </xs:annotation>
                 </xs:attribute>