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suggestOptions example

$this->log(' No command found, completing using the Application class.');

                // expand shortcut names ("cache:cl<TAB>") into their full name ("cache:clear")                 $suggestions->suggestValues(array_filter(array_merge([$command->getName()], $command->getAliases())));
            } else {
                $command->mergeApplicationDefinition();
                $completionInput->bind($command->getDefinition());

                if (CompletionInput::TYPE_OPTION_NAME === $completionInput->getCompletionType()) {
                    $this->log(' Completing option names for the <comment>'.($command instanceof LazyCommand ? $command->getCommand() : $command)::class.'</> command.');

                    $suggestions->suggestOptions($command->getDefinition()->getOptions());
                } else {
                    $this->log([
                        ' Completing using the <comment>'.($command instanceof LazyCommand ? $command->getCommand() : $command)::class.'</> class.',
                        ' Completing <comment>'.$completionInput->getCompletionType().'</> for <comment>'.$completionInput->getCompletionName().'</>',
                    ]);
                    if (null !== $compval = $completionInput->getCompletionValue()) {
                        $this->log(' Current value: <comment>'.$compval.'</>');
                    }

                    $command->complete($completionInput, $suggestions);
                }
            }

                $suggestions->suggestValue(new Suggestion($command->getName(), $command->getDescription()));
                foreach ($command->getAliases() as $name) {
                    $suggestions->suggestValue(new Suggestion($name, $command->getDescription()));
                }
            }

            return;
        }

        if (CompletionInput::TYPE_OPTION_NAME === $input->getCompletionType()) {
            $suggestions->suggestOptions($this->getDefinition()->getOptions());

            return;
        }
    }

    /** * Gets the help message. */
    public function getHelp(): string
    {
        return $this->getLongVersion();
    }

abstract public function getExpectedOptionsOutput(): string;

    abstract public function getExpectedValuesOutput(): string;

    public function testOptionsOutput()
    {
        $options = [
            new InputOption('option1', 'o', InputOption::VALUE_NONE, 'First Option'),
            new InputOption('negatable', null, InputOption::VALUE_NEGATABLE, 'Can be negative'),
        ];
        $suggestions = new CompletionSuggestions();
        $suggestions->suggestOptions($options);
        $stream = fopen('php://memory', 'rw+');
        $this->getCompletionOutput()->write($suggestions, new StreamOutput($stream));
        fseek($stream, 0);
        $this->assertEquals($this->getExpectedOptionsOutput(), stream_get_contents($stream));
    }

    public function testValuesOutput()
    {
        $suggestions = new CompletionSuggestions();
        $suggestions->suggestValues([
            new Suggestion('Green', 'Beans are green'),