public KeyStoreCredentialResolverBuilder type(String type) {
        this.type = requireNonNull(type, "type");
        return this;
    }
Sets a type of the {@link KeyStore}. If not set, the default value retrieved from
{@link KeyStore#getDefaultType()} will be used.
saml/src/main/java/com/linecorp/armeria/server/saml/KeyStoreCredentialResolverBuilder.java