**FastAPI** は開発者の利便性のために `fastapi.responses` という `starlette.responses` と同じものを提供しています。しかし、利用可能なレスポンスのほとんどはStarletteから直接提供されます。

///

## カスタム `Response` を返す

上記の例では必要な部分を全て示していますが、あまり便利ではありません。`item` を直接返すことができるし、**FastAPI** はそれを `dict` に変換して `JSONResponse`　に含めてくれるなど。すべて、デフォルトの動作です。

では、これを使ってカスタムレスポンスをどう返すか見てみましょう。

<a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a>レスポンスを返したいとしましょう。

		}
		buf.WriteString(input.Text())
	}
}

type badLexTest struct {
	input string
	error string
}

var badLexTests = []badLexTest{
	{
		"3 #define foo bar\n",
		"'#' must be first item on line",
	},
	{
		"#ifdef foo\nhello",
		"unclosed #ifdef or #ifndef",
	},
	{
		"#ifndef foo\nhello",
		"unclosed #ifdef or #ifndef",
	},
	{
		"#ifdef foo\nhello\n#else\nbye",

            // Check path starts at byte 2
            byte[] expectedPathBytes = path.getBytes(StandardCharsets.UTF_16LE);
            byte[] actualPathBytes = new byte[expectedPathBytes.length];
            System.arraycopy(dst, 2, actualPathBytes, 0, expectedPathBytes.length);
            assertArrayEquals(expectedPathBytes, actualPathBytes);

            // Check null terminator at the end

                } else if (LogStream.level > 1) {
                    log.println("unknown resolver method: " + s);
                }
            }
            resolveOrder = new int[i];
            System.arraycopy(tmp, 0, resolveOrder, 0, i);
        }
    }

    static class Sem {
        Sem(final int count) {
            this.count = count;
        }

        int count;
    }

              <exclude>org.apache.maven.settings.DefaultMavenSettingsBuilder#DefaultMavenSettingsBuilder()</exclude>
              <!-- END default constructor on Plexus/JSR 330 components -->
              <!-- system property with that name no longer evaluated -->
              <exclude>org.apache.maven.project.DefaultProjectBuilder#DISABLE_GLOBAL_MODEL_CACHE_SYSTEM_PROPERTY</exclude>

                "org.apache.maven.its.plugins:maven-it-plugin:0.1:java", session, session.getCurrentProject());
        XmlNode dom = MojoDescriptorCreator.convert(mojoDescriptor).getDom();
        System.out.println(dom);
    }

    MavenExecutionPlan calculateExecutionPlan(MavenSession session, String... tasks) throws Exception {
        List<TaskSegment> taskSegments =

        retVal |= (bytes[i] & 0xFFL) << (i * 8);
      }
      return retVal;
    }

    @Override
    void writeBytesToImpl(byte[] dest, int offset, int maxLength) {
      System.arraycopy(bytes, 0, dest, offset, maxLength);
    }

    @Override
    byte[] getBytesInternal() {
      return bytes;
    }

    @Override
    boolean equalsSameBits(HashCode that) {

- kubelet now accepts `pid=<number>` in the `--system-reserved` and `--kube-reserved` options to ensure that the specified number of process IDs will be reserved for the system as a whole and for Kubernetes system daemons respectively.  Please reference `Kube Reserved` and `System Reserved` in `Reserve Compute Resources for System Daemons` in the Kubernetes documentation for general discussion of resource reservation.  To utilize this functionality,...

            }
            break;
        default:
            break;
        }
        return OptionalEntity.empty();
    }

    /**
     * Gets a file configuration entity from the form with system info.
     *
     * @param form the create form
     * @return optional file configuration entity
     */
    public static OptionalEntity<FileConfig> getFileConfig(final CreateForm form) {

        retVal |= (bytes[i] & 0xFFL) << (i * 8);
      }
      return retVal;
    }

    @Override
    void writeBytesToImpl(byte[] dest, int offset, int maxLength) {
      System.arraycopy(bytes, 0, dest, offset, maxLength);
    }

    @Override
    byte[] getBytesInternal() {
      return bytes;
    }

    @Override
    boolean equalsSameBits(HashCode that) {