original_string: public function changeColumnType($table, $columnName, $columnType)
      {
          $table = $this->prefixTable($table);
  
          return $this->container->make('Piwik\Updater\Migration\Db\ChangeColumnType', array(
              'table' => $table, 'columnName' => $columnName, 'columnType' => $columnType
          ));
      }
code: public function changeColumnType($table, $columnName, $columnType)
      {
          $table = $this->prefixTable($table);
  
          return $this->container->make('Piwik\Updater\Migration\Db\ChangeColumnType', array(
              'table' => $table, 'columnName' => $columnName, 'columnType' => $columnType
          ));
      }
code_tokens: public function changeColumnType ( $ table , $ columnName , $ columnType ) { $ table = $ this -> prefixTable ( $ table ) ; return $ this -> container -> make ( 'Piwik\Updater\Migration\Db\ChangeColumnType' , array ( 'table' => $ table , 'columnName' => $ columnName , 'columnType' => $ columnType ) ) ; }
docstring: Changes the type of an existing database table column.
  
  @param string $table  Unprefixed database table name, eg 'log_visit'.
  @param string $columnName  The name of the column that shall be changed, eg 'my_column_name'.
  @param string $columnType  The updated type the column should have, eg 'VARCHAR(200) NOT NULL'.
  
  @return ChangeColumnType
docstring_tokens: Changes the type of an existing database table column .