public SslContextBuilder withTrustManager(X509ExtendedTrustManager trustManager) {
        this.trustManager = trustManager;
        return this;
    }
Note: Callee is responsible for configuring the trust manager.
      Any truststore configured by {@link #withTrustStore(KeyStore)} or the other overloads will be ignored.
security-utils/src/main/java/com/yahoo/security/SslContextBuilder.java