Cannot find API of HCMF - "Platform Manager"

According to our requirement to switch version of UC product by a demo portal, I consider we could achieve this goal by accessing the API of HCMF ‘Platform Manager’.

So I tried to look for API of ‘Platform Manager’, however, the other web services (such as’ HCSLicenseManagerWebService’, ‘FulfillmentWebService’, ‘ServiceInventoryWebService’,’ SharedDataRepositoryWebService’) could be found in: https://{hcmf-server IP}:8443/HCSWebServiceInterface, but there is no any about ‘Platform Manager’…

Does it mean I cannot access the API of ‘Platform Manager’? Or can I achieve this by accessing API of ‘HCSLicenseManagerWebService’ about ELM instead?

I think we need to use  Cisco HCS License Manager Web Service API

Cisco HCS License Manager Web Service provides an interface to allow the Cisco Hosted Collaboration Mediation Fulfillment administrator to perform license management tasks such as setting the global deployment mode, creating or deleting a Cisco Prime License Manager (PLM) entry in the HLM, assigning a customer Unified Communications cluster to an LM, unassigning a customer Unified Communications cluster from an LM, updating the assigned cluster platform credential, and retrieving the license relationship among LMs, customers, and Unified Communications clusters.

Reference material on the License Manager Web Service API is found on the Cisco Developer Network at: https://developer.cisco.com/site/hcs/discover/get-started/fulfillment/

The WSDL for the Shared Data Repository Web Service is available on the Cisco Hosted Collaboration Mediation Fulfillment deployment here: https:/​/​example.com/​APIGatewayProxyWebService/​proxy/​hcmf/​soap/​HCSWebServiceInterface/​SharedDataRepositoryWebService?wsdl

Reference  - Supported Applications and APIs