@Override
public CompletableFuture<Either<List<? extends Location>, List<? extends LocationLink>>> implementation(ImplementationParams position) {
	logInfo(">> document/implementation");
	return computeAsyncWithClientProgress((monitor) -> {
		ImplementationsHandler handler = new ImplementationsHandler(preferenceManager);
		return Either.forLeft(handler.findImplementations(position, monitor));
	});
}
 

/**
 * Finds all implemenations of an interface.
 */
@Override
public CompletableFuture<Either<List<? extends Location>, List<? extends LocationLink>>> implementation(ImplementationParams params)
{
    return CompletableFutures.computeAsync(compilerWorkspace.getExecutorService(), cancelToken ->
    {
        cancelToken.checkCanceled();

        //make sure that the latest changes have been passed to
        //workspace.fileChanged() before proceeding
        if(realTimeProblemsChecker != null)
        {
            realTimeProblemsChecker.updateNow();
        }

        compilerWorkspace.startBuilding();
        try
        {
            ImplementationProvider provider = new ImplementationProvider(workspaceFolderManager, fileTracker);
            return provider.implementation(params, cancelToken);
        }
        finally
        {
            compilerWorkspace.doneBuilding();
        }
    });
}
 

/**
 * The goto implementation request is sent from the client to the server to resolve
 * the implementation location of a symbol at a given text document position.
 * 
 * Registration Options: TextDocumentRegistrationOptions
 * 
 * Since version 3.6.0
 */
@JsonRequest
@ResponseJsonAdapter(LocationLinkListAdapter.class)
default CompletableFuture<Either<List<? extends Location>, List<? extends LocationLink>>> implementation(ImplementationParams params) {
	throw new UnsupportedOperationException();
}