Parses a log created by the PHPMonitor and creates a collection of user sequences. 

The optional parameters <timeout>, <minSessionLength>, and <maxSessionLength> can only be used together.

The optional parameters <generateFrequentUsers> and <frequentUserThreshold> can only be used together. 

$USAGE$
<filename> name of the log file
<sequencesName> name of the sequences
<serverUrl> URL of the server that has been monitored
<timeout> optional; timeout of a user session in seconds; default: 360000 (1 hour) 
<minSessionLength> optional; minimal length of a user session; default: 2
<maxSessionLength> optional; maximal length of a user session; default: 100
<generateFrequentUsers> optional; if true, seperate sequence collection for frequent users are generated; default: false
<frequentUserThreshold> optional; defines how many sessions of the same user are required, to be counted as a frequent user