code: func (r Account) SetVlanSpan(enabled *bool) (resp bool, err error) {
  	params := []interface{}{
  		enabled,
  	}
  	err = r.Session.DoRequest("SoftLayer_Account", "setVlanSpan", params, &r.Options, &resp)
  	return
  }
docs: // Set the flag that enables or disables automatic private network VLAN spanning for a SoftLayer customer account. Enabling VLAN spanning allows an account's servers to talk on the same broadcast domain even if they reside within different private vlans.