void (@NotNull PsiJavaFile file) { @NonNls final String name = file.getName(); if (!PsiPackage.PACKAGE_INFO_FILE.equals(name)) { return; } final PsiPackageStatement packageStatement = file.getPackageStatement(); if (packageStatement != null) { return; } final PsiDirectory directory = file.getContainingDirectory(); final PsiPackage aPackage = JavaDirectoryService.getInstance().getPackage(directory); if (aPackage == null) { return; } final String packageName = aPackage.getQualifiedName(); if (packageName.isEmpty() || !PsiDirectoryFactory.getInstance(file.getProject()).isValidPackageName(packageName) || !isValid(file)) { return; } registerError(file, packageName); }