def get_digest(self,<EOL>alias=None,<EOL>manifest=None,<EOL>verify=True,<EOL>dcd=None):
return self._get_alias(alias, manifest, verify, False, dcd, True)<EOL>
(v2 schema only) Get the hash of an alias's configuration blob.

For an alias created using ``dxf``, this is the hash of the first blob
assigned to the alias.

For a Docker image tag, this is the same as
``docker inspect alias --format='{{.Id}}'``.

:param alias: Alias name. You almost definitely will only need to pass this argument.
:type alias: str

:param manifest: If you previously obtained a manifest, specify it here instead of ``alias``. You almost definitely won't need to do this.
:type manifest: str

:param verify: (v1 schema only) Whether to verify the integrity of the alias definition in the registry itself. You almost definitely won't need to change this from the default (``True``).
:type verify: bool

:param dcd: (if ``manifest`` is specified) The Docker-Content-Digest header returned when getting the manifest. If present, this is checked against the manifest.
:type dcd: str

:rtype: str
:returns: Hash of the alias's configuration blob.