- **Utility Classes** - All core functionality exposed through static utility methods for easy access

### Performance Optimizations
- **Caching** - Bean descriptors and reflection metadata are cached for improved performance
- **Lazy initialization** - Resources and expensive operations are initialized only when needed  

it with their cache, and use that same instance everywhere. Otherwise the two cache instances will stomp on each other, corrupt the response cache, and possibly crash your program.

Response caching uses HTTP headers for all configuration. You can add request headers like `Cache-Control: max-stale=3600` and OkHttp's cache will honor them. Your webserver configures how long responses are cached with its own response headers, like `Cache-Control: max-age=9600`. There are cache headers to force...

import okhttp3.Callback
import okhttp3.EventListener
import okhttp3.Interceptor
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import okhttp3.internal.assertLockNotHeld
import okhttp3.internal.cache.CacheInterceptor
import okhttp3.internal.closeQuietly
import okhttp3.internal.concurrent.Lockable
import okhttp3.internal.concurrent.assertLockHeld
import okhttp3.internal.concurrent.assertLockNotHeld

import org.lastaflute.web.util.LaServletContextUtil;
import org.lastaflute.web.validation.ActionValidator;
import org.opensearch.monitor.os.OsProbe;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.ibm.icu.util.ULocale;

import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;

/**

        uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5.0.0
        with:
          java-version: |
            ${{ matrix.java }}
            24
          distribution: 'temurin'
          cache: 'maven'
      - name: 'Install'
        shell: bash
        run: ./mvnw -B -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -Dtoolchain.skip install -U -DskipTests=true -f $ROOT_POM

          </dependencies>
          <configuration>
            <annotations>
              <annotation>com.google.common.base.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.cache.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.collect.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.collect.testing.IgnoreJRERequirement</annotation>

          </dependencies>
          <configuration>
            <annotations>
              <annotation>com.google.common.base.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.cache.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.collect.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.collect.testing.IgnoreJRERequirement</annotation>

   * we don't include the method, then the compiler will complain that an abstract method is
   * unimplemented. So instead we use a dynamic proxy to get an implementation. If the method being
   * called on the {@code TypeVariable} instance has the same name as one of the public methods of
   * {@link TypeVariableImpl}, the proxy calls the same method on its instance of {@code