src/migrations/m170907_052038_rbac_add_index_on_auth_assignment_user_id.php
public function up()
    {
        $this->createIndex($this->index, $this->authManager->assignmentTable, $this->column);
    }
public function up()
    {
        $this->createIndex($this->index, $this->authManager->assignmentTable, $this->column);
    }
{@inheritdoc}