Can we use 5.1-preview.1 to get info about Azure DevOps project

Can we use the API version "5.1-preview.1" to get the info about a project, like similar to this https://docs.microsoft.com/en-us/rest/api/azure/devops/core/projects/get?view=azure-devops-rest-5.1. I want the details about the project's process template ID , which is provided by the version "5.1-preview.1", but not "5.1" . Asking this because the version "5.1-preview.1" is not documented anywhere