@Override
    public boolean equals(@Nullable Object o) {
        if (this == o) {
            return true;
        }

        if (!(o instanceof HttpHeaderGetters)) {
            return false;
        }

        // `contentLengthUnknown` is excluded from the comparison since it is not a field expressing headers
        // data.
        return endOfStream == ((HttpHeaderGetters) o).isEndOfStream() && super.equals(o);
    }
Adds the specified {@code setCookies} with {@link HttpHeaderNames#SET_COOKIE}.
core/src/main/java/com/linecorp/armeria/common/HttpHeadersBase.java