public static CallCredentials authorizationHeaders(final Metadata authorizationHeaders) {
        return new StaticSecurityHeaderCallCredentials(authorizationHeaders);
    }
Creates new call credentials with the given static authorization headers.

@param authorizationHeaders The authorization headers to use.
@return The newly created call credentials.
grpc-client-spring-boot-starter/src/main/java/net/devh/boot/grpc/client/security/CallCredentialsHelper.java