original_string: public function save(){
          $this->_contentArray =  array_merge($this->_codesBeforeEditArea, $this->_editArea, $this->_codesAfterEditArea);
          return $this;
      }
code: public function save(){
          $this->_contentArray =  array_merge($this->_codesBeforeEditArea, $this->_editArea, $this->_codesAfterEditArea);
          return $this;
      }
code_tokens: public function save ( ) { $ this -> _contentArray = array_merge ( $ this -> _codesBeforeEditArea , $ this -> _editArea , $ this -> _codesAfterEditArea ) ; return $ this ; }
docstring: reconstruct the complete file in the memory
docstring_tokens: reconstruct the complete file in the memory