[FIX] Fix class naming (#1803)

vllm/engine/llm_engine.py

@@ -12,8 +12,8 @@ from vllm.logger import init_logger
 from vllm.outputs import RequestOutput
 from vllm.sampling_params import SamplingParams
 from vllm.sequence import (SamplerOutput, Sequence, SequenceGroup,
-                           SequenceGroupMetadata, SequenceGroupOutputs,
-                           SequenceOutputs, SequenceStatus)
+                           SequenceGroupMetadata, SequenceGroupOutput,
+                           SequenceOutput, SequenceStatus)
 from vllm.transformers_utils.tokenizer import (detokenize_incrementally,
                                                get_tokenizer)
 from vllm.utils import Counter
@@ -363,7 +363,7 @@ class LLMEngine:
         return current_worst_score >= highest_attainable_score
 
     def _process_sequence_group_outputs(self, seq_group: SequenceGroup,
-                                        outputs: SequenceGroupOutputs) -> None:
+                                        outputs: SequenceGroupOutput) -> None:
         # Process prompt logprobs
         prompt_logprobs = outputs.prompt_logprobs
         if prompt_logprobs is not None:
@@ -384,7 +384,7 @@ class LLMEngine:
 
         # Process the child samples for each parent sequence
         for parent in parent_seqs:
-            child_samples: List[SequenceOutputs] = parent_child_dict[
+            child_samples: List[SequenceOutput] = parent_child_dict[
                 parent.seq_id]
             if len(child_samples) == 0:
                 # This parent sequence has no children samples. Remove