original_string: public function getAttachmentPdf()
      {
          $response = $this->api->get(
              $this->url() . '/attachment.pdf',
              null,
              'application/json'
          );
  
          return base64_decode($response->data->content);
      }
code: public function getAttachmentPdf()
      {
          $response = $this->api->get(
              $this->url() . '/attachment.pdf',
              null,
              'application/json'
          );
  
          return base64_decode($response->data->content);
      }
code_tokens: public function getAttachmentPdf ( ) { $ response = $ this -> api -> get ( $ this -> url ( ) . '/attachment.pdf' , null , 'application/json' ) ; return base64_decode ( $ response -> data -> content ) ; }
docstring: Returns the PDF-file content for the billogram's attachment.
  
  @return string
docstring_tokens: Returns the PDF - file content for the billogram s attachment .