7 methods override WidgetBase::massageFormValues() in Drupal 8

CommentWidget::massageFormValues in core/modules/comment/src/Plugin/Field/FieldWidget/CommentWidget.php

Massages the form values into the format expected for field values.

DateTimeWidgetBase::massageFormValues in core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php

Massages the form values into the format expected for field values.

EntityReferenceAutocompleteWidget::massageFormValues in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php

Massages the form values into the format expected for field values.

FileWidget::massageFormValues in core/modules/file/src/Plugin/Field/FieldWidget/FileWidget.php

Massages the form values into the format expected for field values.

LinkWidget::massageFormValues in core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php

Massages the form values into the format expected for field values.

MediaLibraryWidget::massageFormValues in core/modules/media_library/src/Plugin/Field/FieldWidget/MediaLibraryWidget.php

Massages the form values into the format expected for field values.

TimestampDatetimeWidget::massageFormValues in core/lib/Drupal/Core/Datetime/Plugin/Field/FieldWidget/TimestampDatetimeWidget.php

Massages the form values into the format expected for field values.