88 files declare their use of Constraint

AllowedValuesConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/AllowedValuesConstraint.php
BlockContentEntityChangedConstraint.php in core/modules/block_content/src/Plugin/Validation/Constraint/BlockContentEntityChangedConstraint.php
BookOutlineConstraint.php in core/modules/book/src/Plugin/Validation/Constraint/BookOutlineConstraint.php
BundleConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/BundleConstraint.php
CKEditor5ElementConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/CKEditor5ElementConstraint.php
CKEditor5MediaAndFilterSettingsInSyncConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/CKEditor5MediaAndFilterSettingsInSyncConstraint.php
CommentNameConstraint.php in core/modules/comment/src/Plugin/Validation/Constraint/CommentNameConstraint.php
ComplexDataConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/ComplexDataConstraint.php
ConfigExistsConstraint.php in core/lib/Drupal/Core/Config/Plugin/Validation/Constraint/ConfigExistsConstraint.php
ConstraintManager.php in core/lib/Drupal/Core/Validation/ConstraintManager.php
ContentTranslationSynchronizedFieldsConstraint.php in core/modules/content_translation/src/Plugin/Validation/Constraint/ContentTranslationSynchronizedFieldsConstraint.php
CountConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/CountConstraint.php
CountryCodeConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/CountryCodeConstraint.php
DateTimeFormatConstraint.php in core/modules/datetime/src/Plugin/Validation/Constraint/DateTimeFormatConstraint.php
DeletedWorkspaceConstraint.php in core/modules/workspaces/src/Plugin/Validation/Constraint/DeletedWorkspaceConstraint.php
EmailConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/EmailConstraint.php
EnabledConfigurablePluginsConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/EnabledConfigurablePluginsConstraint.php
EntityBundleExistsConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/EntityBundleExistsConstraint.php
EntityChangedConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityChangedConstraint.php
EntityHasFieldConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityHasFieldConstraint.php
EntityReferenceSupportedNewEntitiesConstraint.php in core/modules/workspaces/src/Plugin/Validation/Constraint/EntityReferenceSupportedNewEntitiesConstraint.php
EntityTestCompositeConstraint.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestCompositeConstraint.php
EntityTestContainerFactoryPlugin.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestContainerFactoryPlugin.php
EntityTestDefaultPlugin.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestDefaultPlugin.php
EntityTestEntityLevel.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestEntityLevel.php
EntityTypeConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityTypeConstraint.php
EntityUntranslatableFieldsConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityUntranslatableFieldsConstraint.php
EntityWorkspaceConflictConstraint.php in core/modules/workspaces/src/Plugin/Validation/Constraint/EntityWorkspaceConflictConstraint.php
ExtensionExistsConstraint.php in core/lib/Drupal/Core/Extension/Plugin/Validation/Constraint/ExtensionExistsConstraint.php
ExtensionNameConstraint.php in core/lib/Drupal/Core/Extension/Plugin/Validation/Constraint/ExtensionNameConstraint.php
FieldWidgetConstraint.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/FieldWidgetConstraint.php
FileEncodingConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileEncodingConstraint.php
FileExtensionConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileExtensionConstraint.php
FileExtensionSecureConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileExtensionSecureConstraint.php
FileImageDimensionsConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileImageDimensionsConstraint.php
FileIsImageConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileIsImageConstraint.php
FileNameLengthConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileNameLengthConstraint.php
FileSizeLimitConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileSizeLimitConstraint.php
FileUriUnique.php in core/modules/file/src/Plugin/Validation/Constraint/FileUriUnique.php
FileValidationConstraint.php in core/modules/file/src/Plugin/Validation/Constraint/FileValidationConstraint.php
ForumLeafConstraint.php in core/modules/forum/src/Plugin/Validation/Constraint/ForumLeafConstraint.php
FullyValidatableConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/FullyValidatableConstraint.php
FundamentalCompatibilityConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/FundamentalCompatibilityConstraint.php
ImmutablePropertiesConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/ImmutablePropertiesConstraint.php
IsNullConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraint.php
LangcodeRequiredIfTranslatableValuesConstraint.php in core/lib/Drupal/Core/Config/Plugin/Validation/Constraint/LangcodeRequiredIfTranslatableValuesConstraint.php
LengthConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/LengthConstraint.php
LinkAccessConstraint.php in core/modules/link/src/Plugin/Validation/Constraint/LinkAccessConstraint.php
LinkExternalProtocolsConstraint.php in core/modules/link/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraint.php
LinkNotExistingInternalConstraint.php in core/modules/link/src/Plugin/Validation/Constraint/LinkNotExistingInternalConstraint.php
LinkTypeConstraint.php in core/modules/link/src/Plugin/Validation/Constraint/LinkTypeConstraint.php
MediaTestConstraint.php in core/modules/media/tests/modules/media_test_source/src/Plugin/Validation/Constraint/MediaTestConstraint.php
MenuSettingsConstraint.php in core/modules/menu_ui/src/Plugin/Validation/Constraint/MenuSettingsConstraint.php
MenuTreeHierarchyConstraint.php in core/modules/menu_link_content/src/Plugin/Validation/Constraint/MenuTreeHierarchyConstraint.php
ModerationStateConstraint.php in core/modules/content_moderation/src/Plugin/Validation/Constraint/ModerationStateConstraint.php
NotNullConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/NotNullConstraint.php
OEmbedResourceConstraint.php in core/modules/media/src/Plugin/Validation/Constraint/OEmbedResourceConstraint.php
PathAliasConstraint.php in core/modules/path/src/Plugin/Validation/Constraint/PathAliasConstraint.php
PluginExistsConstraint.php in core/lib/Drupal/Core/Plugin/Plugin/Validation/Constraint/PluginExistsConstraint.php
PrimitiveTypeConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraint.php
ProtectedUserFieldConstraint.php in core/modules/user/src/Plugin/Validation/Constraint/ProtectedUserFieldConstraint.php
RangeConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/RangeConstraint.php
ReferenceAccessConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/ReferenceAccessConstraint.php
RegexConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/RegexConstraint.php
RequiredConfigDependenciesConstraint.php in core/lib/Drupal/Core/Config/Plugin/Validation/Constraint/RequiredConfigDependenciesConstraint.php
RestTestConstraint.php in core/modules/rest/tests/modules/rest_test/src/Plugin/Validation/Constraint/RestTestConstraint.php
SourceEditingPreventSelfXssConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/SourceEditingPreventSelfXssConstraint.php
SourceEditingRedundantTagsConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/SourceEditingRedundantTagsConstraint.php
StyleSensibleElementConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/StyleSensibleElementConstraint.php
TaxonomyTermHierarchyConstraint.php in core/modules/taxonomy/src/Plugin/Validation/Constraint/TaxonomyTermHierarchyConstraint.php
TestFieldConstraint.php in core/modules/field/tests/modules/field_test/src/Plugin/Validation/Constraint/TestFieldConstraint.php
TestValidatedReferenceConstraint.php in core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/TestValidatedReferenceConstraint.php
ToolbarItemConditionsMetConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/ToolbarItemConditionsMetConstraint.php
ToolbarItemConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/ToolbarItemConstraint.php
ToolbarItemDependencyConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/ToolbarItemDependencyConstraint.php
UniqueFieldConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UniqueFieldConstraint.php
UniqueLabelInListConstraint.php in core/modules/ckeditor5/src/Plugin/Validation/Constraint/UniqueLabelInListConstraint.php
UniquePathAliasConstraint.php in core/lib/Drupal/Core/Path/Plugin/Validation/Constraint/UniquePathAliasConstraint.php
UriHostConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UriHostConstraint.php
UserCancelMethodsConstraint.php in core/modules/user/src/Plugin/Validation/Constraint/UserCancelMethodsConstraint.php
UserMailRequired.php in core/modules/user/src/Plugin/Validation/Constraint/UserMailRequired.php
UserMailUnique.php in core/modules/user/src/Plugin/Validation/Constraint/UserMailUnique.php
UserNameConstraint.php in core/modules/user/src/Plugin/Validation/Constraint/UserNameConstraint.php
UserNameUnique.php in core/modules/user/src/Plugin/Validation/Constraint/UserNameUnique.php
UuidConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UuidConstraint.php
ValidKeysConstraint.php in core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/ValidKeysConstraint.php
ValidPathConstraint.php in core/lib/Drupal/Core/Path/Plugin/Validation/Constraint/ValidPathConstraint.php
ValidReferenceConstraint.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/ValidReferenceConstraint.php

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