Method isNull

java/src/org/openqa/selenium/internal/Require.java:80–84

(String argName, @Nullable T arg)

  }

  public static <T> void isNull(String argName, @Nullable T arg) {
    if (arg != null) {
      throw new IllegalArgumentException(String.format(MUST_NOT_BE_SET, argName));
    }
  }

  public static <T> ArgumentChecker<T> argument(String argName, @Nullable T arg) {
    return new ArgumentChecker<>(argName, arg);