module GenesisRuby::Api::Mixins::Requests::NonFinancial::Kyc::KycBillingInfoAttributes

def billing_phone1=(value)
  error_message = format(
    'Invalid value given for %{attribute}',
    attribute: __method__
  )
  raise GenesisRuby::InvalidArgumentError, error_message unless value.nil? || value =~ /^\d+$/
  @billing_phone1 = value
end