original_string: public function copy($source, $destination = null)
      {
          if ($destination === null) {
              $destination = basename($source);
          }
  
          $this->toCopy[] = array($source, $destination);
  
          return $this;
      }
code: public function copy($source, $destination = null)
      {
          if ($destination === null) {
              $destination = basename($source);
          }
  
          $this->toCopy[] = array($source, $destination);
  
          return $this;
      }
code_tokens: public function copy ( $ source , $ destination = null ) { if ( $ destination === null ) { $ destination = basename ( $ source ) ; } $ this -> toCopy [ ] = array ( $ source , $ destination ) ; return $ this ; }
docstring: Add a file to copy
docstring_tokens: Add a file to copy