SSLParametersImpl cloneWithTrustManager(X509TrustManager newTrustManager) {
        return new SSLParametersImpl(clientSessionContext, serverSessionContext, x509KeyManager,
                pskKeyManager, newTrustManager, null, null, this);
    }
Returns X.509 key manager or null for none.
common/src/main/java/org/conscrypt/SSLParametersImpl.java