code: private function getModifiersSequences(Tokens $tokens, $startIndex, $endIndex)
      {
          $sequence = [];
          for ($i = $startIndex; $i < $endIndex - 1; ++$i) {
              if ($tokens[$i]->isWhitespace() || $tokens[$i]->isComment()) {
                  continue;
              }
  
              if (!$tokens[$i]->isGivenKind([T_PUBLIC, T_PROTECTED, T_PRIVATE, T_STATIC, T_CONST, T_VAR])) {
                  break;
              }
  
              $sequence[] = clone $tokens[$i];
              $sequence[] = new Token([T_WHITESPACE, ' ']);
          }
  
          return $sequence;
      }
docs: @param Tokens $tokens
  @param int    $startIndex
  @param int    $endIndex
  
  @return Token[]