code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          $useDeclarations = (new NamespaceUsesAnalyzer())->getDeclarationsFromTokens($tokens);
  
          if (0 === \count($useDeclarations)) {
              return;
          }
  
          foreach ((new NamespacesAnalyzer())->getDeclarations($tokens) as $namespace) {
              $currentNamespaceUseDeclarations = array_filter(
                  $useDeclarations,
                  function (NamespaceUseAnalysis $useDeclaration) use ($namespace) {
                      return
                          $useDeclaration->getStartIndex() >= $namespace->getScopeStartIndex()
                          && $useDeclaration->getEndIndex() <= $namespace->getScopeEndIndex()
                      ;
                  }
              );
  
              $usagesSearchIgnoredIndexes = [];
  
              foreach ($currentNamespaceUseDeclarations as $useDeclaration) {
                  $usagesSearchIgnoredIndexes[$useDeclaration->getStartIndex()] = $useDeclaration->getEndIndex();
              }
  
              foreach ($currentNamespaceUseDeclarations as $useDeclaration) {
                  if (!$this->importIsUsed($tokens, $namespace, $usagesSearchIgnoredIndexes, $useDeclaration->getShortName())) {
                      $this->removeUseDeclaration($tokens, $useDeclaration);
                  }
              }
  
              $this->removeUsesInSameNamespace($tokens, $currentNamespaceUseDeclarations, $namespace);
          }
      }
docs: {@inheritdoc}