*
     * <p>Note that this method may be expensive when {@link #isContentCached()} returns false, depending on the implementation.
     *
     * @return true if this resource exists.
     * @throws ResourceException On failure to check whether resource exists.
     */
    boolean getExists() throws ResourceException;

    /**

import java.util.ArrayList;
import java.util.Arrays;

import org.gradle.api.DefaultTask;
import org.gradle.api.provider.Property;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.TaskAction;
// tag::custom-task-implementation[]
import org.gradle.api.tasks.options.Option;
import org.gradle.api.tasks.options.OptionValues;

public abstract class UrlProcess extends DefaultTask {
    private String url;
    private OutputType outputType;

// tag::sample[]
// The following types can appear anywhere in the code
// but say nothing about API or implementation usage
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * <p>Represents a connection to a Gradle implementation.
 *
 * <p>The following constraints apply to implementations:
 * <ul>
 * <li>Implementations must be thread-safe.
 * <li>Implementations should implement {@link InternalInvalidatableVirtualFileSystemConnection}. This is used by all consumer versions from 6.1.

     */
    ClassLoader getIsolatedSystemClassLoader();

    /**
     * Creates a ClassLoader implementation which has only the classes from the specified URIs and the Java API visible.
     */
    ClassLoader createIsolatedClassLoader(String name, ClassPath classPath);

    /**

 */

package org.gradle.workers;

import javax.inject.Inject;

/**
 * Represents the implementation of a unit of work to be used when submitting work to the
 * {@link WorkerExecutor}.
 *
 * <p>
 *     A work action implementation is an abstract class implementing the {@link #execute()} method.
 *     A minimal implementation may look like this:
 * </p>
 *
 * <pre class='autoTested'>

    public String getHashCode() {
        return hashCode.toString();
    }

    // TODO Provide default implementation
    // TODO Deprecate and move this to BuildCacheKeyInternal
    @Override
    public byte[] toByteArray() {
        return hashCode.toByteArray();
    }

    // TODO Provide default implementation
    @Override
    @Deprecated
    @SuppressWarnings("InlineMeSuggester")
    public String getDisplayName() {

          .build();

  /**
   * type → implementation. Inherently mutable interfaces and abstract classes are mapped to their
   * default implementations and are "new"d upon get().
   */
  private static final ConcurrentMap<Class<?>, Class<?>> implementations = Maps.newConcurrentMap();

  private static <T> void setImplementation(Class<T> type, Class<? extends T> implementation) {

    /**
     * Creates a decoder that reads from the given input stream. Note that the implementation may perform buffering, and may consume any or all of the
     * content from the given input stream.
     */
    Decoder newDecoder(InputStream inputStream);

    /**
     * Creates an encoder that writes the given output stream. Note that the implementation may perform buffering.
     */
    FlushableEncoder newEncoder(OutputStream outputStream);

        configurations.getByName(mainSourceSet.getRuntimeClasspathConfigurationName()).extendsFrom(implementation, runtimeOnly);
        // Update the default test suite's source set to extend our "extension" feature's dependency scopes.
        configurations.getByName(JvmConstants.TEST_COMPILE_CLASSPATH_CONFIGURATION_NAME).extendsFrom(implementation);