Moves the parser to the previous line.
File
 
   - drupal/core/vendor/symfony/yaml/Symfony/Component/Yaml/Parser.php, line 355
Class
  
  - Parser 
- Parser parses YAML strings to convert them to PHP arrays.
Namespace
  Symfony\Component\Yaml
Code
private function moveToPreviousLine() {
  $this->currentLine = $this->lines[--$this->currentLineNb];
}