code: func (c *Conn) FKConstraints() (bool, error) {
  	r, err := c.sqlite.Query(fkChecks, nil)
  	if err != nil {
  		return false, err
  	}
  
  	dest := make([]driver.Value, len(r.Columns()))
  	types := r.(*sqlite3.SQLiteRows).DeclTypes()
  	if err := r.Next(dest); err != nil {
  		return false, err
  	}
  
  	values := normalizeRowValues(dest, types)
  	if values[0] == int64(1) {
  		return true, nil
  	}
  	return false, nil
  }
docs: // FKConstraints returns whether FK constraints are set or not.