Returns a collection of session objects where the AccountName property starts with the passed -AccountName parameter
EXAMPLE:
Find-XASessions -AccountName 'mydomain\m'
Will return all sessions of 'mydomain\Max' and 'mydomain\Michael' (and all other users who's account name starts with'mydomain\m').
NOTE:
This function requires the Citrix.XenApp.Commands PSSnapIn.
see also Find-CTXSessions