///

```Python hl_lines="15"
{!> ../../docs_src/dependencies/tutorial012.py!}
```

////

And all the ideas in the section about [adding `dependencies` to the *path operation decorators*](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} still apply, but in this case, to all of the *path operations* in the app.

## Dependencies for groups of *path operations*

	scanStateStarted
	scanStateSuccess
	scanStateError

	// Time in which the initiator of a scan must have reported back.
	metacacheMaxRunningAge = time.Minute

	// Max time between client calls before dropping an async cache listing.
	metacacheMaxClientWait = 3 * time.Minute

	// metacacheBlockSize is the number of file/directory entries to have in each block.
	metacacheBlockSize = 5000

      and conversions to other media types.

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      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
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      copyright notice that is included in or attached to the work
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      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
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      copyright notice that is included in or attached to the work
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      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
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      copyright notice that is included in or attached to the work
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      "Derivative Works" shall mean any work, whether in Source or Object
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      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
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      "Work" shall mean the work of authorship, whether in Source or
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