private static String upperCaseBearer(String scheme) {
    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
  }
Sets the token, which together with the scheme, will be sent as the value of the Authorization header.

@param bearerToken The bearer token to send in the Authorization header
plc4j/drivers/ctrlx/src/main/java/org/apache/plc4x/java/ctrlx/readwrite/rest/datalayer/auth/HttpBearerAuth.java