* When such a classloader attempts to define a class, the agent calls {@link #instrumentClass(String, ProtectionDomain, byte[])} method
 * giving the classloader a chance to rewrite the bytecode of the class.
 * <p>
 * Methods defined in this interface may be called concurrently in multiple threads.
 */
public interface InstrumentingClassLoader {
    /**

do FastAPI.

!!! tip "Dica"
    Para perguntas, pergunte nas <a href="https://github.com/tiangolo/fastapi/issues/new/choose" class="external-link" target="_blank">questões do GitHub</a>, lá tem um chance maior de você ser ajudado sobre o FastAPI [FastAPI Experts](fastapi-people.md#especialistas){.internal-link target=_blank}.

    Use o chat apenas para outro tipo de assunto.

### Não faça perguntas no chat

     * Communicates a request for build cancellation. Note that this method blocks until the operation has been cancelled.
     *
     * <p>If any long running command is currently running, this method does block for certain time to give chance to perform cancellation, and if the command
     * doesn't finnish in a timely manner a request for forceful stop will be issued ({@link #requestForcefulStop(String reason)}.</p>
     */
    void cancelBuild();

    /**

					result[count] = pairs[j : j+2]
					count++
					prev = i + len(lit)
				}
			}
			result = result[0:count]
			if len(result) >= n || len(indices) != n1 {
				// found all matches or there's no chance to find more
				// (n and n1 can be negative)
				break
			}
		}
		if len(result) == 0 {
			result = nil
		}
		return
	}

	// regexp has a non-empty literal prefix; Lookup(lit) computes

# render them properly).
GINKGO_NO_COLOR=${GINKGO_NO_COLOR:-$(if [ -t 2 ]; then echo n; else echo y; fi)}

# If 'y', will rerun failed tests once to give them a second chance.
GINKGO_TOLERATE_FLAKES=${GINKGO_TOLERATE_FLAKES:-n}

# If set, the command executed will be:
# - `dlv exec` if set to "delve"
# - `gdb` if set to "gdb"
# NOTE: for this to work the e2e.test binary has to be compiled with

## Reduce duplication

Reducing code duplication is one of the core ideas in **FastAPI**.

As code duplication increments the chances of bugs, security issues, code desynchronization issues (when you update in one place but not in the others), etc.

And these models are all sharing a lot of the data and duplicating attribute names and types.

	// the ownership. New arriving goroutines have an advantage -- they are
	// already running on CPU and there can be lots of them, so a woken up
	// waiter has good chances of losing. In such case it is queued at front
	// of the wait queue. If a waiter fails to acquire the mutex for more than 1ms,
	// it switches mutex to the starvation mode.
	//

					// Note that some file system drivers may never return this error code, as the spec allows to return the "." and ".."
					// entries in such cases, making the directory appear non-empty.
					// The chances of false positive are very low, as we know that the directory exists, else GetVolumeInformationByHandle
					// would have failed, and that the handle is still valid, as we haven't closed it.
					// See go.dev/issue/61159.

    Mas `open()` não usa `async` e `await`.

    Então, nós declaramos uma função de manipulação de evento com o padrão `def` ao invés de `async def`.

### `startup` e `shutdown` juntos

Há uma grande chance que a lógica para sua *inicialização* e *encerramento* esteja conectada, você pode querer iniciar alguma coisa e então finalizá-la, adquirir um recurso e então liberá-lo, etc.

    But `open()` doesn't use `async` and `await`.

    So, we declare the event handler function with standard `def` instead of `async def`.

### `startup` and `shutdown` together

There's a high chance that the logic for your *startup* and *shutdown* is connected, you might want to start something and then finish it, acquire a resource and then release it, etc.