Method formElement has 58 lines of code (exceeds 40 allowed). Consider refactoring.

Open

  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state): array {
    $element = parent::formElement($items, $delta, $element, $form, $form_state);
    $options = $this->getOptions($items->getEntity());
    $selected_items = $this->getSelectedOptions($items);
 
 

Function formElement has a Cognitive Complexity of 11 (exceeds 10 allowed). Consider refactoring.

Open

  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state): array {
    $element = parent::formElement($items, $delta, $element, $form, $form_state);
    $options = $this->getOptions($items->getEntity());
    $selected_items = $this->getSelectedOptions($items);
 
 

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syntax error, unexpected ','

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  id: 'taxonomy_label_hierarchy',

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Perl-style comments are not allowed; use "// Comment" instead

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#[FieldWidget(

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Expected 1 space after "="; 0 found

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declare(strict_types=1);

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Unused use statement

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use Drupal\Core\Field\Attribute\FieldWidget;

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Missing class doc comment

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final class TaxonomyLabelHierarchyWidget extends OptionsWidgetBase {

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Line indented incorrectly; expected 0 spaces, found 2

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  id: 'taxonomy_label_hierarchy',

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Doc comment short description must start with a capital letter

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   * {@inheritDoc}

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Expected 1 space before "="; 0 found

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declare(strict_types=1);

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Doc comment short description must end with a full stop

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   * {@inheritDoc}

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