code: public function requireField()
      {
          // Obtain Charset and Collation:
          
          $charset   = MySQLDatabase::config()->charset;
          $collation = MySQLDatabase::config()->collation;
          
          // Define Field Specification:
          
          $spec = [
              'type' => 'varchar',
              'parts' => [
                  'datatype' => 'varchar',
                  'precision' => 64,
                  'collate' => $collation,
                  'character set' => $charset,
                  'arrayValue' => $this->arrayValue
              ]
          ];
          
          // Require Database Field:
          
          DB::require_field($this->tableName, $this->name, $spec);
      }
docs: Adds the field to the underlying database.
  
  @return void