/**
* @return Iterator
*/
public function buildIterator()
{
if (!$this->exists()) {
throw new RuntimeException("The file {$this->pathToFile} does not exist");
}
$iterator = new Iterator($this->pathToFile, $this->fieldDelimiter, $this->fieldEnclosure);
if ($this->columnNames) {
$iterator->setColumnNames($this->columnNames);
}
return $iterator;
}
