docs: public static boolean equals2(Object x, Object y) {
          if (x instanceof java.lang.Number)
              return equalsNumObject((java.lang.Number)x, y);
          if (x instanceof java.lang.Character)
              return equalsCharObject((java.lang.Character)x, y);
          if (x == null)
              return y == null;
  
          return x.equals(y);
      }