updateDocument() public method

..
public updateDocument ( Path $p, $contentType )
$p Path
 public function putDocument(Path $p, $contentType, $documentData, array $ifMatch = null, array $ifNoneMatch = null)
 {
     if (null !== $ifMatch && !in_array($this->md->getVersion($p), $ifMatch)) {
         throw new PreconditionFailedException('version mismatch');
     }
     if (null !== $ifNoneMatch && in_array('*', $ifNoneMatch) && null !== $this->md->getVersion($p)) {
         throw new PreconditionFailedException('document already exists');
     }
     $updatedEntities = $this->d->putDocument($p, $documentData);
     $this->md->updateDocument($p, $contentType);
     foreach ($updatedEntities as $u) {
         $this->md->updateFolder(new Path($u));
     }
 }