signature_def_key)` with
        `meta_graph_def.signature_def[signature_def_key]`. Catching a ValueError
        exception thrown by `tf.contrib.get_signature_def_by_key` should be
        replaced by catching a KeyError exception.
*   `tf.contrib.data`
    *   Deprecate, and replace by tf.data.experimental.
*   Other:

                            rule: duration(self) >= duration('1ms')
                        unmatchedPreflights:
                          description: |-
                            Indicates whether preflight requests not matching the configured allowed origin shouldn't be forwarded to the upstream.

                            Valid Options: FORWARD, IGNORE
                          enum:
                          - UNSPECIFIED

                            rule: duration(self) >= duration('1ms')
                        unmatchedPreflights:
                          description: |-
                            Indicates whether preflight requests not matching the configured allowed origin shouldn't be forwarded to the upstream.

                            Valid Options: FORWARD, IGNORE
                          enum:
                          - UNSPECIFIED

open the file at index `preferred_shard` in the list of matching files and try
to restore tensors from that file.  Only if some tensors or tensor slices are
not found in that first file, then the Op opens all the files. Setting
`preferred_shard` to match the value passed as the `shard` input
of a matching `Save` Op may speed up Restore.  This attribute only affects