code: private function getExpectedIndentAt(Tokens $tokens, $index)
      {
          $index = $tokens->getPrevMeaningfulToken($index);
          $indent = $this->whitespacesConfig->getIndent();
  
          for ($i = $index; $i >= 0; --$i) {
              if ($tokens[$i]->equals(')')) {
                  $i = $tokens->findBlockStart(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $i);
              }
  
              $currentIndent = $this->getIndentAt($tokens, $i);
              if (null === $currentIndent) {
                  continue;
              }
  
              if ($this->currentLineRequiresExtraIndentLevel($tokens, $i, $index)) {
                  return $currentIndent.$indent;
              }
  
              return $currentIndent;
          }
  
          return $indent;
      }
docs: @param Tokens $tokens
  @param int    $index  index of the first token on the line to indent
  
  @return string