protected List<HeaderValue> parseHeaderValue(String headerValue) {
        return parseHeaderValue(headerValue, HEADER_VALUE_SEPARATOR, HEADER_QUALIFIER_SEPARATOR);
    }
@Test
    void headers_parseHeaderValue_encodedContentWithEquals() {
        AwsHttpServletRequest context = new AwsProxyHttpServletRequest(null, null, null);

        String value = Base64.getUrlEncoder().encodeToString("a".getBytes());

        List<AwsHttpServletRequest.HeaderValue> result = context.parseHeaderValue(value);
        assertTrue(result.size() > 0);
        assertEquals("YQ==", result.get(0).getValue());
    }