code: public Observable<RedisLinkedServerWithPropertiesInner> getAsync(String resourceGroupName, String name, String linkedServerName) {
          return getWithServiceResponseAsync(resourceGroupName, name, linkedServerName).map(new Func1<ServiceResponse<RedisLinkedServerWithPropertiesInner>, RedisLinkedServerWithPropertiesInner>() {
              @Override
              public RedisLinkedServerWithPropertiesInner call(ServiceResponse<RedisLinkedServerWithPropertiesInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets the detailed information about a linked server of a redis cache (requires Premium SKU).
  
  @param resourceGroupName The name of the resource group.
  @param name The name of the redis cache.
  @param linkedServerName The name of the linked server.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the RedisLinkedServerWithPropertiesInner object