22 files declare their use of Application in Zircon Profile 8

AbstractDescriptorTest.php in vendor/symfony/console/Tests/Descriptor/AbstractDescriptorTest.php

ApplicationDescription.php in vendor/symfony/console/Descriptor/ApplicationDescription.php

ApplicationTest.php in vendor/symfony/console/Tests/ApplicationTest.php

ApplicationTester.php in vendor/symfony/console/Tester/ApplicationTester.php

ApplicationTesterTest.php in vendor/symfony/console/Tests/Tester/ApplicationTesterTest.php

Bundle.php in vendor/symfony/http-kernel/Bundle/Bundle.php

Command.php in vendor/symfony/console/Command/Command.php

CommandTest.php in vendor/symfony/console/Tests/Command/CommandTest.php

CommandTesterTest.php in vendor/symfony/console/Tests/Tester/CommandTesterTest.php

DbDumpApplication.php in core/lib/Drupal/Core/Command/DbDumpApplication.php

Contains \Drupal\Core\Command\DbDumpApplication.

DbToolsApplication.php in core/lib/Drupal/Core/Command/DbToolsApplication.php

Contains \Drupal\Core\Command\DbToolsApplication.

Descriptor.php in vendor/symfony/console/Descriptor/Descriptor.php

DescriptorApplication1.php in vendor/symfony/console/Tests/Fixtures/DescriptorApplication1.php

DescriptorApplication2.php in vendor/symfony/console/Tests/Fixtures/DescriptorApplication2.php

GenerateProxyClassApplication.php in core/lib/Drupal/Core/Command/GenerateProxyClassApplication.php

Contains \Drupal\Core\Command\GenerateProxyClassApplication.

HelpCommandTest.php in vendor/symfony/console/Tests/Command/HelpCommandTest.php

JsonDescriptor.php in vendor/symfony/console/Descriptor/JsonDescriptor.php

ListCommandTest.php in vendor/symfony/console/Tests/Command/ListCommandTest.php

MarkdownDescriptor.php in vendor/symfony/console/Descriptor/MarkdownDescriptor.php

SymfonyStyle.php in vendor/symfony/console/Style/SymfonyStyle.php

TextDescriptor.php in vendor/symfony/console/Descriptor/TextDescriptor.php

XmlDescriptor.php in vendor/symfony/console/Descriptor/XmlDescriptor.php