public static CallCredentials authorizationHeader(final String authorization) {
        requireNonNull(authorization, "authorization");
        final Metadata extraHeaders = new Metadata();
        extraHeaders.put(AUTHORIZATION_HEADER, authorization);
        return authorizationHeaders(extraHeaders);
    }
Creates new call credentials with the given static authorization information.

<p>
<b>Note:</b> This method uses experimental grpc-java-API features.
</p>

@param authorization The authorization to use. The authorization usually starts with the scheme such as as
       {@code "Basic "} or {@code "Bearer "} followed by the actual authentication information.
@return The newly created call credentials.
@see SecurityConstants#AUTHORIZATION_HEADER
@see #authorizationHeaders(Metadata)
grpc-client-spring-boot-starter/src/main/java/net/devh/boot/grpc/client/security/CallCredentialsHelper.java