### Paso 2: crea una "instance" de `FastAPI`

{* ../../docs_src/first_steps/tutorial001.py hl[3] *}

Aquí la variable `app` será una "instance" de la clase `FastAPI`.

Este será el punto principal de interacción para crear toda tu API.

### Paso 3: crea una *path operation*

#### Path

"Path" aquí se refiere a la última parte de la URL empezando desde la primera `/`.

Así que, en una URL como:

```

        // in test environments, we test that the method exists and can be invoked
        // without throwing unexpected exceptions
        try {
            // Create a new instance to ensure clean state
            SystemMonitorTarget testTarget = new SystemMonitorTarget();

            // Try to call the expired method
            // Note: This method may fail in test environments due to system dependencies

     * @param form The search form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse reset(final SearchForm form) {
        accessTokenPager.clear();
        return asHtml(path_AdminAccesstoken_AdminAccesstokenJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    /**
     * Search with paging.

    assertFailsWith<ProtocolException> {
      clientReader.processNextFrame()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected rsv2 flag")
    }
    data.clear()
    data.write("9a00".decodeHex()) // Empty pong, flag 3 set.
    assertFailsWith<ProtocolException> {
      clientReader.processNextFrame()
    }.also { expected ->

    assertEquals(I18N.length(), copied);
  }

  /**
   * Test for Guava issue 1061: https://github.com/google/guava/issues/1061
   *
   * <p>CharStreams.copy was failing to clear its CharBuffer after each read call, which effectively
   * reduced the available size of the buffer each time a call to read didn't fill up the available

        C filtered2 = filter(filtered1, PRIME_DIGIT);

        C inverseFiltered =
            filter(createUnfiltered(contents), not(Predicates.and(EVEN, PRIME_DIGIT)));

        filtered2.clear();
        assertThat(unfiltered).containsExactlyElementsIn(inverseFiltered);
      }
    }
  }

  public abstract static class AbstractFilteredSetTest<C extends Set<Integer>>

    assertEquals(I18N.length(), copied);
  }

  /**
   * Test for Guava issue 1061: https://github.com/google/guava/issues/1061
   *
   * <p>CharStreams.copy was failing to clear its CharBuffer after each read call, which effectively
   * reduced the available size of the buffer each time a call to read didn't fill up the available

            assertTrue(echoResponse.isReceived());
            assertEquals(testException, echoResponse.getException());
        }

        @Test
        @DisplayName("Should clear received state")
        void testClearReceived() {
            echoResponse.received();
            assertTrue(echoResponse.isReceived());

            echoResponse.clearReceived();

@echo off
@REM set title of command window
title %0
@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
@if "%MAVEN_BATCH_ECHO%"=="on" echo %MAVEN_BATCH_ECHO%

@REM Clear/define a variable for any options to be inserted via script
@REM We want to avoid trying to parse the external MAVEN_OPTS variable
SET INTERNAL_MAVEN_OPTS=

@REM Execute a user defined script before this one

	n.lockMapMutex.Lock()
	nsLk, found := n.lockMap[resource]
	if !found {
		nsLk = &nsLock{
			LRWMutex: lsync.NewLRWMutex(),
		}
		// Add a count to indicate that a parallel unlock doesn't clear this entry.
	}
	nsLk.ref++
	n.lockMap[resource] = nsLk
	n.lockMapMutex.Unlock()

	// Locking here will block (until timeout).
	if readLock {
		locked = nsLk.GetRLock(ctx, opsID, lockSource, timeout)