35 files declare their use of WebformElementBase in Webform 8.5

BooleanBase.php in src/Plugin/WebformElement/BooleanBase.php

Captcha.php in src/Plugin/WebformElement/Captcha.php

Color.php in src/Plugin/WebformElement/Color.php

ContainerBase.php in src/Plugin/WebformElement/ContainerBase.php

DateBase.php in src/Plugin/WebformElement/DateBase.php

EntityAutocomplete.php in src/Plugin/WebformElement/EntityAutocomplete.php

LanguageSelect.php in src/Plugin/WebformElement/LanguageSelect.php

MachineName.php in src/Plugin/WebformElement/MachineName.php

NumericBase.php in src/Plugin/WebformElement/NumericBase.php

OptionsBase.php in src/Plugin/WebformElement/OptionsBase.php

Password.php in src/Plugin/WebformElement/Password.php

Table.php in src/Plugin/WebformElement/Table.php

TextBase.php in src/Plugin/WebformElement/TextBase.php

TextFormat.php in src/Plugin/WebformElement/TextFormat.php

Value.php in src/Plugin/WebformElement/Value.php

VerticalTabs.php in src/Plugin/WebformElement/VerticalTabs.php

WebformAttachmentBase.php in modules/webform_attachment/src/Plugin/WebformElement/WebformAttachmentBase.php

WebformCodeMirror.php in src/Plugin/WebformElement/WebformCodeMirror.php

WebformCompositeBase.php in src/Plugin/WebformElement/WebformCompositeBase.php

WebformComputedBase.php in src/Plugin/WebformElement/WebformComputedBase.php

WebformElement.php in src/Plugin/WebformElement/WebformElement.php

WebformExampleElement.php in modules/webform_example_element/src/Plugin/WebformElement/WebformExampleElement.php

WebformHeight.php in src/Plugin/WebformElement/WebformHeight.php

WebformHorizontalRule.php in src/Plugin/WebformElement/WebformHorizontalRule.php

WebformLikert.php in src/Plugin/WebformElement/WebformLikert.php

WebformManagedFileBase.php in src/Plugin/WebformElement/WebformManagedFileBase.php

WebformMapping.php in src/Plugin/WebformElement/WebformMapping.php

WebformMarkupBase.php in src/Plugin/WebformElement/WebformMarkupBase.php

WebformSignature.php in src/Plugin/WebformElement/WebformSignature.php

WebformTable.php in src/Plugin/WebformElement/WebformTable.php

WebformTableRow.php in src/Plugin/WebformElement/WebformTableRow.php

WebformTestElement.php in tests/modules/webform_test_element/src/Plugin/WebformElement/WebformTestElement.php

WebformTestElementProperties.php in tests/modules/webform_test_element/src/Plugin/WebformElement/WebformTestElementProperties.php

WebformTime.php in src/Plugin/WebformElement/WebformTime.php

WebformVariant.php in src/Plugin/WebformElement/WebformVariant.php