def replace(kb_id, replace_kb, custom_headers:nil)
      response = replace_async(kb_id, replace_kb, custom_headers:custom_headers).value!
      nil
    end
def replace(kb_id, replace_kb, custom_headers:nil)
      response = replace_async(kb_id, replace_kb, custom_headers:custom_headers).value!
      nil
    end
Replace knowledgebase contents.

 @param kb_id [String] Knowledgebase id.
 @param replace_kb [ReplaceKbDTO] An instance of ReplaceKbDTO which contains
 list of qnas to be uploaded
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.