code: public Observable<SecretBundle> setSecretAsync(String vaultBaseUrl, String secretName, String value, Map<String, String> tags, String contentType, SecretAttributes secretAttributes) {
          return setSecretWithServiceResponseAsync(vaultBaseUrl, secretName, value, tags, contentType, secretAttributes).map(new Func1<ServiceResponse<SecretBundle>, SecretBundle>() {
              @Override
              public SecretBundle call(ServiceResponse<SecretBundle> response) {
                  return response.body();
              }
          });
      }
docs: Sets a secret in a specified key vault.
  The SET operation adds a secret to the Azure Key Vault. If the named secret already exists, Azure Key Vault creates a new version of that secret. This operation requires the secrets/set permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param secretName The name of the secret.
  @param value The value of the secret.
  @param tags Application specific metadata in the form of key-value pairs.
  @param contentType Type of the secret value such as a password.
  @param secretAttributes The secret management attributes.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the SecretBundle object