Does ES 6.2.* support MultiSearchTemplateRequest or SearchTemplateRequestBuilder? How do you perform multisearch with templates?

https://github.com/spring-projects/spring-data-elasticsearch supports up to ES 6.2. I converted all my queries to templates and is trying to use multi-search for all my template queries. I tried

// code
val multiRequest = MultiSearchTemplateRequest()
val str = SearchTemplateRequestBuilder(client)

  1. Are there examples of using MultiSearchTemplateRequest with SearchTemplateRequestBuilder?
  2. Does client allow MultiSearchTemplateRequest?
  3. Are there examples using multisearch with templates in 6.2 or 6.4?
  4. Should prepareMultiSearchTemplateRequestBuilder or msearchTemplate exist on client?

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