docstr: Returns the full name of the image if it has been built.
docstr_tok: ["Returns","the","full","name","of","the","image","if","it","has","been","built","."]
code: def built_image_tag(self) -> Optional[str]:
      """Returns the full name of the image if it has been built."""
  
      if self.is_built and self.image_identifier:
          return self.image_identifier.full_name_with_tag
      return None
  
file_path: PySyft/packages/syft/src/syft/service/worker/worker_image.py
imports: from typing import Optional
  from ...custom_worker.config import WorkerConfig
  from ...node.credentials import SyftVerifyKey
  from ...serde.serializable import serializable
  from ...types.datetime import DateTime
  from ...types.syft_object import SYFT_OBJECT_VERSION_1
  from ...types.syft_object import SyftObject
  from ...types.uid import UID
  from .image_identifier import SyftWorkerImageIdentifier
label_desc: Use image node_id 2 for calling the SyftWorkerImage obj's underlying member method code with example usage: obj.built_image_tag() and returns: None, self