# Query Parameter Models { #query-parameter-models }

If you have a group of **query parameters** that are related, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

    }

    // Test class with single role
    @Secured({ "ROLE_USER" })
    static class SingleRoleClass {
        public void testMethod() {
        }
    }

    // Test class with multiple roles
    @Secured({ "ROLE_USER", "ROLE_ADMIN" })
    static class MultipleRolesClass {
        public void testMethod() {
        }
    }

    // Test class with method annotations

        value = "\"value,with,commas\"";
        result = KuromojiCSVUtil.parse(value);
        assertEquals(1, result.length);
        assertEquals("\"value,with,commas\"", result[0]);

        // Multiple quoted values - quotes are removed
        value = "\"first\",\"second\",\"third\"";
        result = KuromojiCSVUtil.parse(value);
        assertEquals(3, result.length);
        assertEquals("first", result[0]);

            transportPool.removeTransport(null);

            // Then
            verify(transportPool).removeTransport(null);
        }

        @Test
        @DisplayName("Should remove multiple transports")
        void testRemoveMultipleTransports() {
            // Given
            SmbTransport transport2 = mock(SmbTransport.class);
            doNothing().when(transportPool).removeTransport(any());

        } catch (NullPointerException e) {
            // Expected exception
            assertNotNull(e);
        }
    }

    public void test_shutdown_multipleCalls() {
        // Test multiple shutdown calls
        AtomicInteger shutdownCount = new AtomicInteger(0);
        jobExecutor.addShutdownListener(new ShutdownListener() {
            @Override
            public void onShutdown() {

    /* 4. State verification after operations                             */
    /* ------------------------------------------------------------------ */

    @Test
    @DisplayName("Multiple reads update offset correctly")
    void testMultipleReadsUpdateOffset() {
        byte[] buffer1 = new byte[] { 0x10, 0x00, 0x00, 0x00 }; // 16
        byte[] buffer2 = new byte[] { 0x20, 0x00, 0x00, 0x00 }; // 32

        entry.removeChild("nonexistent.txt");
        assertTrue(entry.hasChanges()); // Still has changes from previous removal
    }

    @Test
    public void testGetChildren() {
        // Add multiple children
        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);

    void testJoinTwoElements() {
        String result = StringUtil.join(",", "hello", "world");
        assertEquals("hello,world", result);
    }

    @Test
    @DisplayName("Should join multiple elements with delimiter")
    void testJoinMultipleElements() {
        String result = StringUtil.join(",", "one", "two", "three", "four");
        assertEquals("one,two,three,four", result);
    }

    @Test

        esUrlFilter.setFilterType(INCLUDE);
        esUrlFilter.setUrl(url);
        insert(esUrlFilter, OpType.INDEX);
        includeFilterCache.invalidate(sessionId);
    }

    /**
     * Adds multiple include URL filters for the specified session.
     *
     * @param sessionId The session ID.
     * @param urlList The list of URL patterns to include.
     */
    @Override

      - name: compress and encrypt
        run: |
          ${GITHUB_WORKSPACE}/.github/workflows/run-mint.sh "compress-encrypt" "minio" "minio123" "${{ steps.vars.outputs.sha_short }}"

      - name: multiple pools
        run: |
          ${GITHUB_WORKSPACE}/.github/workflows/run-mint.sh "pools" "minio" "minio123" "${{ steps.vars.outputs.sha_short }}"

      - name: standalone erasure
        run: |