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@@ -101,7 +101,7 @@ export default class AttributeElement extends Element {
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* Throws {@link module:utils/ckeditorerror~CKEditorError attribute-element-get-elements-with-same-id-no-id}
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* if this element has no `id`.
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*
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- * @returns {Set.<module:engine/view/attributeelement~AttributeElement>|null} Set containing all the attribute elements
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+ * @returns {Set.<module:engine/view/attributeelement~AttributeElement>} Set containing all the attribute elements
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* with the same `id` that were added and not removed from the view tree.
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*/
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getElementsWithSameId() {
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