* annotation implies nothing about the quality or performance of the API in question, only the fact
 * that it is not "API-frozen."
 *
 * <p>It is generally safe for <i>applications</i> to depend on beta APIs, at the cost of some extra
 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *

 * annotation implies nothing about the quality or performance of the API in question, only the fact
 * that it is not "API-frozen."
 *
 * <p>It is generally safe for <i>applications</i> to depend on beta APIs, at the cost of some extra
 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *

## IMPORTANT WARNINGS

1. APIs marked with the `@Beta` annotation at the class or method level
are subject to change. They can be modified in any way, or even
removed, at any time. If your code is a library itself (i.e. it is
used on the CLASSPATH of users outside your own control), you should
not use beta APIs, unless you [repackage] them. **If your
code is a library, we strongly recommend using the [Guava Beta Checker] to

2.  APIs without `@Beta` will remain binary-compatible for the indefinite
    future. (Previously, we sometimes removed such APIs after a deprecation
    period. The last release to remove non-`@Beta` APIs was Guava 21.0.) Even
    `@Deprecated` APIs will remain (again, unless they are `@Beta`). We have no
    plans to start removing things again, but officially, we're leaving our

  - [Changelog since v1.10.0-beta.4](#changelog-since-v1100-beta4)
    - [Other notable changes](#other-notable-changes-14)
- [v1.10.0-beta.4](#v1100-beta4)
  - [Downloads for v1.10.0-beta.4](#downloads-for-v1100-beta4)
    - [Client Binaries](#client-binaries-15)
    - [Server Binaries](#server-binaries-15)
    - [Node Binaries](#node-binaries-15)
  - [Changelog since v1.10.0-beta.3](#changelog-since-v1100-beta3)

    os: "linux"
    arch: "aarch64"
    vendor: "temurin"
    version: "jdk-26+29-ea-beta"
    sha256: "b1655a00613dcd96471d9ab3627d6be2b1e090961956c0a3efe4965db57c67de"
  - params:
      - "linux.java26.openjdk.64bit"
    os: "linux"
    arch: "amd64"
    vendor: "temurin"
    version: "jdk-26+29-ea-beta"
    sha256: "47681b76d3de17376cb8720f342e252c740c5d5540cd4083f5abb2cdb56c1591"
  - params:

- [v1.6.0-beta.3](#v160-beta3)
  - [Downloads for v1.6.0-beta.3](#downloads-for-v160-beta3)
    - [Client Binaries](#client-binaries-16)
    - [Server Binaries](#server-binaries-16)
  - [Changelog since v1.6.0-beta.2](#changelog-since-v160-beta2)
    - [Other notable changes](#other-notable-changes-19)
- [v1.6.0-beta.2](#v160-beta2)
  - [Downloads for v1.6.0-beta.2](#downloads-for-v160-beta2)
    - [Client Binaries](#client-binaries-17)

        checkVersionsEqual("1.0.0x", "1-x");
        checkVersionsEqual("1cr", "1rc");

        // special "aliases" a, b and m for alpha, beta and milestone
        checkVersionsEqual("1a1", "1-alpha-1");
        checkVersionsEqual("1b2", "1-beta-2");
        checkVersionsEqual("1m3", "1-milestone-3");

        // case insensitive
        checkVersionsEqual("1X", "1x");

   */
  @GwtIncompatible
  @J2ktIncompatible
  @CanIgnoreReturnValue
  @IgnoreJRERequirement // TODO: b/288085449 - Remove this once we use library-desugaring scents.
  @Beta // TODO: b/288085449 - Remove @Beta after we're sure that Java 8 APIs are safe for Android
  public FakeTicker advance(Duration duration) {
    return advance(duration.toNanos());
  }

  /**

from fastapi import FastAPI
from fastapi.testclient import TestClient
from inline_snapshot import snapshot
from pydantic import BaseModel, Field


class MessageEventType(str, Enum):
    alpha = "alpha"
    beta = "beta"


class MessageEvent(BaseModel):
    event_type: MessageEventType = Field(default=MessageEventType.alpha)
    output: str


class MessageOutput(BaseModel):
    body: str = ""