code: func (r Dns_Domain_Registration) ModifyContact(contact *datatypes.Container_Dns_Domain_Registration_Contact) (resp bool, err error) {
  	params := []interface{}{
  		contact,
  	}
  	err = r.Session.DoRequest("SoftLayer_Dns_Domain_Registration", "modifyContact", params, &r.Options, &resp)
  	return
  }
docs: // The modifyContact method modifies contact information (admin, billing, owner, technical) for a domain.