20 files declare their use of InputArgument in Zircon Profile 8

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

Application.php in vendor/symfony/console/Application.php

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

ArgvInputTest.php in vendor/symfony/console/Tests/Input/ArgvInputTest.php

ArrayInputTest.php in vendor/symfony/console/Tests/Input/ArrayInputTest.php

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

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

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

DescriptorCommand2.php in vendor/symfony/console/Tests/Fixtures/DescriptorCommand2.php

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

Contains \Drupal\Core\Command\GenerateProxyClassCommand.

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

InputArgumentTest.php in vendor/symfony/console/Tests/Input/InputArgumentTest.php

InputDefinitionTest.php in vendor/symfony/console/Tests/Input/InputDefinitionTest.php

InputTest.php in vendor/symfony/console/Tests/Input/InputTest.php

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

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

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

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

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

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