original_string: public function getContentUrl($streamId = null)
      {
          $objectService = $this->getBinding()->getObjectService();
          if ($objectService instanceof LinkAccessInterface) {
              if ($streamId === null) {
                  return $objectService->loadContentLink($this->getRepositoryId(), $this->getId());
              } else {
                  return $objectService->loadRenditionContentLink($this->getRepositoryId(), $this->getId(), $streamId);
              }
          }
  
          return null;
      }
code: public function getContentUrl($streamId = null)
      {
          $objectService = $this->getBinding()->getObjectService();
          if ($objectService instanceof LinkAccessInterface) {
              if ($streamId === null) {
                  return $objectService->loadContentLink($this->getRepositoryId(), $this->getId());
              } else {
                  return $objectService->loadRenditionContentLink($this->getRepositoryId(), $this->getId(), $streamId);
              }
          }
  
          return null;
      }
code_tokens: public function getContentUrl ( $ streamId = null ) { $ objectService = $ this -> getBinding ( ) -> getObjectService ( ) ; if ( $ objectService instanceof LinkAccessInterface ) { if ( $ streamId === null ) { return $ objectService -> loadContentLink ( $ this -> getRepositoryId ( ) , $ this -> getId ( ) ) ; } else { return $ objectService -> loadRenditionContentLink ( $ this -> getRepositoryId ( ) , $ this -> getId ( ) , $ streamId ) ; } } return null ; }
docstring: Returns the content URL of the document or a rendition if the binding
  supports content URLs.
  
  Depending on the repository and the binding, the server might not return
  the content but an error message. Authentication data is not attached.
  That is, a user may have to re-authenticate to get the content.
  
  @param string|null $streamId the ID of the rendition or <code>null</code> for the document
  
  @return string|null the content URL of the document or rendition or <code>null</code> if
  the binding does not support content URLs
docstring_tokens: Returns the content URL of the document or a rendition if the binding supports content URLs .