original_string: private function _loadDelFile()
      {
          if ($this->_delGen == -1) {
              // There is no delete file for this segment
              return null;
          } else if ($this->_delGen == 0) {
              // It's a segment with pre-2.1 format delete file
              // Try to load deletions file
              return $this->_loadPre21DelFile();
          } else {
              // It's 2.1+ format deleteions file
              return $this->_load21DelFile();
          }
      }
code: private function _loadDelFile()
      {
          if ($this->_delGen == -1) {
              // There is no delete file for this segment
              return null;
          } else if ($this->_delGen == 0) {
              // It's a segment with pre-2.1 format delete file
              // Try to load deletions file
              return $this->_loadPre21DelFile();
          } else {
              // It's 2.1+ format deleteions file
              return $this->_load21DelFile();
          }
      }
code_tokens: private function _loadDelFile ( ) { if ( $ this -> _delGen == - 1 ) { // There is no delete file for this segment return null ; } else if ( $ this -> _delGen == 0 ) { // It's a segment with pre-2.1 format delete file // Try to load deletions file return $ this -> _loadPre21DelFile ( ) ; } else { // It's 2.1+ format deleteions file return $ this -> _load21DelFile ( ) ; } }
docstring: Load detetions file
  
  Returns bitset or an array depending on bitset extension availability
  
  @return mixed
  @throws Zend_Search_Lucene_Exception
docstring_tokens: Load detetions file