get nodes of taxonomy term(s) in drupal 8

nodes of taxonomy.php

function getNodesByTaxonomyTermIds($termIds){
  $termIds = (array) $termIds;
  if(empty($termIds)){
    return NULL;
  }

  $query = \Drupal::database()->select('taxonomy_index', 'ti');
  $query->fields('ti', array('nid'));
  $query->condition('ti.tid', $termIds, 'IN');
  $query->distinct(TRUE);
  $result = $query->execute();

  if($nodeIds = $result->fetchCol()){
    return Node::loadMultiple($nodeIds);
  }

  return NULL;
}