code: public function build(Request $request)
      {
          if (count($request->getArgs()) != 1) {
              echo 'Wrong arguments.' . PHP_EOL . 'Usage : db/build mapping_name' . PHP_EOL;
          } else {
              $mapping = $request->getArgs()[0];
              echo 'Are you sure you want to delete all existing tables and data for mapping "' . $mapping . '" ? [y/n] : ';
              if (fgetc(STDIN) == 'y') {
                  $schema = Schema::getSchema($mapping);
                  $schema->build();
              }
          }
      }
docs: Build data structures.
  
  @param Request $request current CLI request