public Map<String, Object> getResponseHeaders() {
    return responseMetadata.has(RESPONSE_HEADERS_KEY) ? responseMetadata.getJSONObject(RESPONSE_HEADERS_KEY).toMap()
        : Collections.emptyMap();
  }
@return the response headers associated with this response channel
ambry-test-utils/src/main/java/com/github/ambry/rest/MockRestResponseChannel.java