code: public static <T> void assertEquals (@Nullable final String sUserMsg, @Nullable final T x, @Nullable final T y)
    {
      if (!EqualsHelper.equals (x, y))
        fail ("<" +
              x +
              "> is not equal to <" +
              y +
              ">" +
              (sUserMsg != null && sUserMsg.length () > 0 ? ": " + sUserMsg : ""));
    }
docs: Like JUnit assertEquals but using {@link EqualsHelper}.
  
  @param sUserMsg
  Optional user message. May be <code>null</code>.
  @param x
  Fist object. May be <code>null</code>
  @param y
  Second object. May be <code>null</code>.