@Override
      public void visitVariable(@NotNull PsiVariable variable) {
        if (!checkVariables) return;
        final PsiIdentifier identifier = variable.getNameIdentifier();
        if (identifier == null) return;
        final PsiType type = variable.getType();
        PsiType targetType = getConversionClassType(type);
        if (targetType != null) {
          holder.registerProblem(identifier,
                                 TypeMigrationBundle.message("guava.functional.primitives.can.be.replaced.by.java.api.problem.description"),
                                 new MigrateGuavaTypeFix(variable, targetType));
        }
      }
@Override
      public void visitVariable(@NotNull PsiVariable variable)