add generation to apimodels

lm_eval/models/api_models.py

@@ -647,3 +647,18 @@ class TemplateAPI(TemplateLM):
             # cache this loglikelihood_rolling request
             self.cache_hook.add_partial("loglikelihood_rolling", (string,), string_nll)
         return loglikelihoods
+
+    def simple_async_generate(
+        self, requests: Union[List[List[str]], List[List[dict]]], gen_kwargs: dict
+    ):
+        results = itertools.chain.from_iterable(
+            asyncio.run(
+                self.get_batched_requests(
+                    requests,
+                    cache_keys=[None] * len(requests),
+                    generate=True,
+                    gen_kwargs=gen_kwargs,
+                )
+            )
+        )
+        return list(results)