idp 2.4.1 mdui extension

[MA Lanxin]

Hello,

I have an IDP 2.4.1 server. I need to use mdui extension to define DisplayName and Logo in IDP matadata. 

Here is a part of the metadata of my IDP.

<?xml version="1.0" encoding="UTF-8"?>
<EntityDescriptor 
    xmlns="urn:oasis:names:tc:SAML:2.0:metadata" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:shibmd="urn:mace:shibboleth:metadata:1.0" 
    xmlns:ds="http://www.w3.org/2000/09/xmldsig#" 
    entityID="https://idp.b.ac.cn/idp/shibboleth">
    <IDPSSODescriptor protocolSupportEnumeration="urn:mace:shibboleth:1.0 urn:oasis:names:tc:SAML:1.1:protocol urn:oasis:names:tc:SAML:2.0:protocol">
       <Extensions>
          <shibmd:Scope regexp="false">ac.cn</shibmd:Scope>
       </Extensions>

I cannot see sstc-saml-metadata-ui-v1.0.xsd etc. in my metadata.
Could somebody give me some clues on how to do it? in order to use mdui extension to define DisplayName and Logo in IDP metadata.

Thank a lot,
Regards
Lanxin