code: def save(item, filepath, format=None):
      if isinstance(item, ivy.Container):
          if format is not None:
              item.cont_save(filepath, format=format)
          else:
              item.cont_save(filepath)
      elif isinstance(item, ivy.Module):
          item.save(filepath)
      else:
          raise ivy.utils.exceptions.IvyException(
              "Unsupported item type for saving."
          )
  
file_path: ivy/ivy/functional/ivy/utility.py
imports: from typing import Union, Optional, Sequence
  import ivy
  from ivy.func_wrapper import handle_array_function, to_native_arrays_and_back, handle_out_argument, handle_nestable, handle_array_like_without_promotion, handle_backend_invalid
  from ivy.utils.exceptions import handle_exceptions
label_desc: Use image node_id 3 for calling a global function with example usage: save(item, filepath, format) without return types