code: func (r Account) GetNetworkVlanSpan() (resp datatypes.Account_Network_Vlan_Span, err error) {
  	err = r.Session.DoRequest("SoftLayer_Account", "getNetworkVlanSpan", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve Whether or not an account has automatic private VLAN spanning enabled.