code: def merge_flatten_type(src):
      # type: (Any) -> Any
      
  
      if isinstance(src, MutableSequence):
          return [merge_flatten_type(t) for t in src]
      if isinstance(src, MutableMapping) and src.get("type") == "array":
          return src
      return {"items": src, "type": "array"}
docs: Return the merge flattened type of the source type