code: public function drop(DatabaseObjectInterface $databaseObject, $cascade = false)
      {
          $command = $this->getCommand($databaseObject, false);
          if ($cascade) {
              $command->cascade();
          }
  
          return $command->execute();
      }
docs: Drop a database object.
  
  @param DatabaseObjectInterface $databaseObject Database object.
  @param bool                    $cascade        Drop databse object cascade.
  
  @return integer