By considering these concepts, you will be able to **evaluate and design** the best way to deploy **your own APIs**.

In the next chapters, I'll give you more **concrete recipes** to deploy FastAPI applications.

But for now, let's check these important **conceptual ideas**. These concepts also apply to any other type of web API. 💡

they were lying on their faces, and the pattern on their backs
was the same as the rest of the pack, she could not tell whether
they were gardeners, or soldiers, or courtiers, or three of her
own children.

  `How should I know?' said Alice, surprised at her own courage.
`It's no business of MINE.'

  The Queen turned crimson with fury, and, after glaring at her
for a moment like a wild beast, screamed `Off with her head!
Off--'

        Method childMethod = ChildClass.class.getMethod("parentMethod");
        Secured childSecured = childMethod.getAnnotation(Secured.class);
        assertNull(childSecured);
    }

    // Test child's own method annotation
    public void test_childMethodAnnotation() throws NoSuchMethodException {
        Method method = ChildClass.class.getMethod("childMethod");
        Secured secured = method.getAnnotation(Secured.class);

                result[i * 4 + j] = (byte) (context[i] >>> 8 * j);
            }
        }

        // reset the engine
        engineReset();
        return result;
    }

    // own methods
    //...........................................................................

    /**
     *    MD4 basic transformation.
     *    <p>

## See it in the docs { #see-it-in-the-docs }

When you see the automatic docs, you can check that the input model and output model will both have their own JSON Schema:

<img src="/img/tutorial/response-model/image01.png">

And both models will be used for the interactive API documentation:

<img src="/img/tutorial/response-model/image02.png">

const (
	Unknown = BackendType(madmin.Unknown)
	// Filesystem backend.
	BackendFS = BackendType(madmin.FS)
	// Multi disk BackendErasure (single, distributed) backend.
	BackendErasure = BackendType(madmin.Erasure)
	// Add your own backend.
)

// StorageInfo - represents total capacity of underlying storage.
type StorageInfo = madmin.StorageInfo

// objectHistogramInterval is an interval that will be

    lock02 = factory3.newReentrantLock(OtherOrder.SECOND);
    lock03 = factory3.newReentrantLock(OtherOrder.THIRD);
  }

  // In the unittest, create each ordered factory with its own set of lock
  // graph nodes (as opposed to using the static per-Enum map) to avoid
  // conflicts across different test runs.
  private <E extends Enum<E>>

    lock02 = factory3.newReentrantLock(OtherOrder.SECOND);
    lock03 = factory3.newReentrantLock(OtherOrder.THIRD);
  }

  // In the unittest, create each ordered factory with its own set of lock
  // graph nodes (as opposed to using the static per-Enum map) to avoid
  // conflicts across different test runs.
  private <E extends Enum<E>>

A virtual environment is a **directory**, very similar to the global one, where you can install the packages for a project.

This way, each project will have its own virtual environment (`.venv` directory) with its own packages.

```mermaid
flowchart TB
    subgraph stone-project[philosophers-stone project]
        stone(philosophers-stone) --->|requires| harry-1
        subgraph venv1[.venv]

        // Verify chaining
        assertEquals(response2, response1.getNextResponse());
        assertNull(response2.getNextResponse());

        // Verify each response maintains its own notifications
        assertEquals(1, response1.getNotifyInformation().size());
        assertEquals(mockNotifyInfo1, response1.getNotifyInformation().get(0));

        assertEquals(1, response2.getNotifyInformation().size());