## Execution of dependencies with `yield`

The sequence of execution is more or less like this diagram. Time flows from top to bottom. And each column is one of the parts interacting or executing code.

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation

That's what would happen to a third party application that tried to access one of these *path operations* with a token provided by a user, depending on how many permissions the user gave the application.

## About third party integrations

In this example we are using the OAuth2 "password" flow.

This caching depends on declaring all inputs to the given generator as part of the cache key. This is extremely error-prone, as there is nothing preventing generators from consuming inputs that are *not* part of the key. When this happens, different clients will non-deterministically get incorrect configuration. This type of bug has historically resulted in CVEs.

    return stringWriter.toString();
  }

  /**
   * Returns the stack trace of {@code throwable}, possibly providing slower iteration over the full
   * trace but faster iteration over parts of the trace. Here, "slower" and "faster" are defined in
   * comparison to the normal way to access the stack trace, {@link Throwable#getStackTrace()

	MaxParts            int                 // used in GetObjectAttributes. Signals how many parts we should return
	PartNumberMarker    int                 // used in GetObjectAttributes. Signals the part number after which results should be returned
	PartNumber          int                 // only useful in case of GetObject/HeadObject

		SrcFilePath: srcPath,
		DstVolume:   dstVolume,
		DstFilePath: dstPath,
		Meta:        meta,
	})
	return toStorageErr(err)
}

// ReadParts - reads various part.N.meta paths from a drive remotely and returns object part info for each of those part.N.meta if found
func (client *storageRESTClient) ReadParts(ctx context.Context, volume string, partMetaPaths ...string) ([]*ObjectPartInfo, error) {
	values := make(url.Values)

		Code:           "InvalidPart",
		Description:    "One or more of the specified parts could not be found.  The part may not have been uploaded, or the specified entity tag may not match the part's entity tag.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMissingPart: {
		Code:           "InvalidRequest",
		Description:    "You must specify at least one part",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidPartOrder: {

        }
        if (footer != null) {
            for (String s : footer) {
                writer.writeln(s);
            }
        }
        writer.flush();
    }

    /**
     * Checks if parts of the passed in comment can be used as header comment.
     * This method checks whether a header comment can be defined (i.e. whether
     * this is the first comment in the loaded file). If this is the case, it is

Even so, Go provides a mechanism called GODEBUG to
reduce the impact such changes have on Go developers
using newer toolchains to compile old code.

A GODEBUG setting is a `key=value` pair
that controls the execution of certain parts of a Go program.
The environment variable `GODEBUG`
can hold a comma-separated list of these settings.
For example, if a Go program is running in an environment that contains

	GODEBUG=http2client=0,http2server=0

* `secret_name`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:28] hl[25:28] *}

### Create with `HeroCreate` and return a `HeroPublic`

Now that we have **multiple models**, we can update the parts of the app that use them.

We receive in the request a `HeroCreate` *data model*, and from it, we create a `Hero` *table model*.