import org.checkerframework.common.value.qual.*;

public class ArrayLenTest {
  public static String esc_quantify(String @ArrayLen({1, 2}) ... vars) {
    if (vars.length == 1) {
      return vars[0];
    } else {
      @IntVal({2}) int i = vars.length;
      String @ArrayLen({2}) [] a = vars;
      return vars[0] + vars[1];
    }
  }
}