Add pseudo field to node edit form (works fine in combination with field_group module)

pseudo_field_node_edit.php

<?php 
/**
 * Implements hook_form_alter().
 */
function mymodule_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
  if ($form_id == 'node_article_edit_form') {
     $form['my_view'] = [
      '#markup' => 'Some arbitrary markup.',
    ];
    // Access entity object.
    $entity = $form_state->getFormObject()->getEntity()->id();
  }
}


/**
 * Implements hook_entity_extra_field_info().
 */
function mymodule_entity_extra_field_info() {
  $extra = array();

  foreach (NodeType::loadMultiple() as $bundle) {
    $extra['node'][$bundle->id()]['form']['my_view'] = array(
      'label' => t('myView'),
      'description' => t('Display my view in here'),
      'weight' => 100,
      'visible' => TRUE,
    );
  }
  return $extra;
}