def set_snmpv3_service(authentication_type = Credential::AuthenticationType::NOAUTH, username = nil, password = nil, privacy_type = Credential::PrivacyType::NOPRIV, privacy_password = nil)
      self.authentication_type = authentication_type
      self.user_name           = username
      self.password            = password
      self.privacy_type        = privacy_type
      self.privacy_password    = privacy_password
      self.service             = Credential::Service::SNMPV3
    end
def set_snmpv3_service(authentication_type = Credential::AuthenticationType::NOAUTH, username = nil, password = nil, privacy_type = Credential::PrivacyType::NOPRIV, privacy_password = nil)
      self.authentication_type = authentication_type
      self.user_name           = username
      self.password            = password
      self.privacy_type        = privacy_type
      self.privacy_password    = privacy_password
      self.service             = Credential::Service::SNMPV3
    end
sets the Simple Network Management Protocol v3 service.