/**
* Return value of specific IM. This function will return null if IM is not found
*
* @access public
* @param ImType $im_type
* @return string
*/
function getImValue(ImType $im_type)
{
$im_value = ContactImValues::findById(array('contact_id' => $this->getId(), 'im_type_id' => $im_type->getId()));
return $im_value instanceof ContactImValue && trim($im_value->getValue()) != '' ? $im_value->getValue() : null;
}
