code: def migrate(
      klass_from: Union[type, str],
      klass_to: Union[type, str],
      version_from: Optional[int] = None,
      version_to: Optional[int] = None,
  ) -> Callable:
      (
          klass_from_str,
          version_from,
          klass_to_str,
          version_to,
      ) = validate_klass_and_version(
          klass_from=klass_from,
          version_from=version_from,
          klass_to=klass_to,
          version_to=version_to,
      )
  
      if klass_from_str != klass_to_str:
          raise Exception(
              "Migration can only be performed across classes with same canonical name."
              f"Provided args: klass_from: {klass_from_str}, klass_to: {klass_to_str}"
          )
  
      if version_from is None or version_to is None:
          raise Exception(
              "Version information missing at either of the classes."
              f"{klass_from_str} has version: {version_from}, {klass_to_str} has version: {version_to}"
          )
  
      def decorator(function: Callable):
          transforms = function()
  
          wrapper = generate_transform_wrapper(
              klass_from=klass_from,
              klass_to=klass_to,
              transforms=transforms,
          )
  
          SyftMigrationRegistry.register_transform(
              klass_type_str=klass_from_str,
              version_from=version_from,
              version_to=version_to,
              method=wrapper,
          )
  
          return function
  
      return decorator
  
imports: from typing import Callable
  from typing import Optional
  from typing import Union
  from .syft_object import SyftMigrationRegistry
  from .transforms import generate_transform_wrapper
  from .transforms import validate_klass_and_version
label_desc: Use image node_id 1 for calling a global function with example usage: migrate(klass_from, klass_to, version_from, version_to) and returns: decorator, function