I have a node (e.g. a business "company") with a paragraph referenced field (suppose business "sector", with multiple fields). This paragraph has in its fields a reference to another paragraph (suppose "employee" with multiple fields, one of this is a reference to a taxonomy term). In a hook_form_submit(), with $form and FormStateInterface $form_state as parameters, I need to programmatically associate multiple employees paragraph to a sector paragraph.

... $node = Node::load($id); $sector = Paragraph::load($node->get('field_sector')->target_id);  /**  * List of taxonomy terms loaded elsewhere.  * I've added a custom elment to the select with "_all" employees  * in order to associate programmatically all the employees to the $sector.  *   * @var array $employees  */ foreach ($employees as $employee) {     $paragraph = Paragraph::create([         'type' => 'employee',     ]);     $paragraph->set('field_name', $employee->get('field_name')->value;     $paragraph->set('field_age', $employee->get('field_age')->value;     ...     $paragraph->save();      $sector->set('field_employee', $paragraph); // here I don't know how to append to the sector     $sector->save(); } 

I tried to associate each $employee to the $sector but with $sector->set('field_employee', $paragraph); syntax or with $sector->appendItem($paragraph), that works for nodes, it doesn’t work.

Is there a way to programmatically add one paragraph to another?

Visualizing the question, in the image below, when I save the entity with custom option "All employees" (_all) selected, I’d like to attach all the 4 paragraph employees associated to the "a selected sector" paragraph (removing _all).

Thanks in advance.