So, it was a complete additional system.

It is not very popular or used nowadays.

## OpenAPI { #openapi }

OpenAPI (previously known as Swagger) is the open specification for building APIs (now part of the Linux Foundation).

**FastAPI** is based on **OpenAPI**.

That's what makes it possible to have multiple automatic interactive documentation interfaces, code generation, etc.

        try {
            javax.xml.parsers.DocumentBuilderFactory factory = javax.xml.parsers.DocumentBuilderFactory.newInstance();
            javax.xml.parsers.DocumentBuilder builder = factory.newDocumentBuilder();
            String result = testHelper.getSnapshotActualVersion(builder, "test-url/", "1.0.0-SNAPSHOT");
            assertEquals("20180814.210714-10", result);
        } catch (Exception e) {

            builder.append(arrayString, 1, arrayString.length() - 1);
          } else {
            builder.append(value);
          }
        }
      }
      return builder.append('}').toString();
    }

    private ValueHolder addHolder() {
      ValueHolder valueHolder = new ValueHolder();
      holderTail = holderTail.next = valueHolder;

    if (array.length == 0) {
      return "";
    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 5);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

  /**

  public static <E> SortedSetTestSuiteBuilder<E> using(TestSortedSetGenerator<E> generator) {
    SortedSetTestSuiteBuilder<E> builder = new SortedSetTestSuiteBuilder<>();
    builder.usingGenerator(generator);
    return builder;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {

  public static <E> SortedSetTestSuiteBuilder<E> using(TestSortedSetGenerator<E> generator) {
    SortedSetTestSuiteBuilder<E> builder = new SortedSetTestSuiteBuilder<>();
    builder.usingGenerator(generator);
    return builder;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {

            """
            **/build/git-checkout/platforms/core-runtime/base-services/build/generated-resources/build-receipt/org/gradle/build-receipt.properties
            **/build/distributions/*.zip => promote-build-distributions
            **/build/releases-data-checkout/data/releases.xml
            **/build/git-checkout/build/reports/integTest/** => distribution-tests
            **/smoke-tests/build/reports/tests/** => post-smoke-tests

RESULT_STORE_LINK_RE = re.compile(
    r'^INFO: Streaming build results to: (https://[\w./\-]+)')
FAILED_BUILD_LINE = 'FAILED: Build did NOT complete successfully'
BUILD_STATUS_LINE = 'INFO: Build'
TESTS_FAILED_RE = re.compile(r'^INFO: Build completed, \d+ tests? FAILED')
BAZEL_COMMAND_RE = re.compile(
    r'(^| )(?P<command>bazel (.*? )?(?P<type>test|build) .+)')


class InvokeStatus:
  tests_failed = 'tests_failed'

//go:build !(windows || js || wasip1)

package main

import (
	"regexp"
	"strings"
	"testing"
)

func TestExitCodeFilter(t *testing.T) {
	// Write text to the filter one character at a time.
	var out strings.Builder
	f, exitStr := newExitCodeFilter(&out)
	// Embed a "fake" exit code in the middle to check that we don't get caught on it.
	pre := "abc" + exitStr + "123def"
	text := pre + exitStr + `1`
	for i := 0; i < len(text); i++ {

    /** Returns a new {@code TypeResolver} with {@code variable} mapping to {@code type}. */
    final TypeTable where(Map<TypeVariableKey, ? extends Type> mappings) {
      ImmutableMap.Builder<TypeVariableKey, Type> builder = ImmutableMap.builder();
      builder.putAll(map);
      for (Entry<TypeVariableKey, ? extends Type> mapping : mappings.entrySet()) {
        TypeVariableKey variable = mapping.getKey();
        Type type = mapping.getValue();