import java.io.Serializable;
import java.util.Collections;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;

/**
 * Worker-side implementation of {@link RequestProtocol} executing actions.
 */
public class WorkerAction implements Action<WorkerProcessContext>, Serializable, RequestProtocol, StreamFailureHandler, Stoppable, StreamCompletion {

    private final String vendor;
    private final String implementation;

    public JavaToolchainInput(JavaToolchainSpec spec) {
        this.javaLanguageVersion = spec.getLanguageVersion().getOrNull();
        this.vendor = spec.getVendor().get().toString();
        this.implementation = spec.getImplementation().get().toString();
    }

    @Optional
    @Input

 * should override {@code equals} as well, either providing your own implementation, or delegating
 * to the provided {@code standardEquals} method.
 *
 * <p>Each of the {@code standard} methods, where appropriate, use {@link Objects#equal} to test
 * equality for both keys and values. This may not be the desired behavior for map implementations
 * that use non-standard notions of key equality, such as the entry of a {@code SortedMap} whose

 * either providing your own implementation, or delegating to the provided {@code standardAdd}
 * method.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingSortedMultiset}.
 *

 * some state that tasks use to do their work. A service implementation might hold, for example, an in-memory cache that tasks use
 * to improve performance. Or, as another example, a service implementation might represent a web service that the build starts and
 * uses.
 *

        throw new UnsupportedOperationException("This ObjectFactory implementation does not support constructing named objects");
    }

    @Override
    public SourceDirectorySet sourceDirectorySet(String name, String displayName) {
        throw new UnsupportedOperationException("This ObjectFactory implementation does not support constructing source directory sets");
    }

    @Override

 * override {@code addAll} as well, either providing your own implementation, or delegating to the
 * provided {@code standardAddAll} method.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingNavigableSet}.
 *

    /**
     * The packages which are allowed to leak from the application classpath into the implementation classpath.
     * These packages affect both classes and resources.
     * Subpackages of the provided packages are also shared with the implementation classpath.
     *
     * @return The list of packages which are shared from the application to the implementation classpath.
     */
    Set<String> getSharedPackages();

            @Override
            public void visitImplementation(Class<?> implementation) {
                workClass.set(GeneratedSubclasses.unpack(implementation));
            }

            @Override
            public void visitImplementation(ImplementationSnapshot implementation) {
            }
        });

     * @param classfileBuffer the buffer that contains class implementation bytes in class file format - must not be modified
     * @return new class implementation bytes in class file format or {@code null} to continue loading the original implementation
     */
    @Nullable