code: public Long serviceName_pca_pcaServiceName_usage_GET(String serviceName, String pcaServiceName) throws IOException {
  		String qPath = "/cloud/{serviceName}/pca/{pcaServiceName}/usage";
  		StringBuilder sb = path(qPath, serviceName, pcaServiceName);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, Long.class);
  	}
docs: View account current total sessions usage (bytes)
  
  REST: GET /cloud/{serviceName}/pca/{pcaServiceName}/usage
  @param serviceName [required] The internal name of your public cloud passport
  @param pcaServiceName [required] The internal name of your PCA offer
  @deprecated