'ParserClearState': called at the end of Parser::clearState()
$parser: Parser object being cleared
+'ParserFirstCallInit': called when the ther parser initialises for the first time
+$parser: Parser object being cleared
+
'ParserGetVariableValueSwitch': called when the parser need the value of a custom magic word
$parser: Parser object
$varCache: array to store the value in case of multiples calls of the same magic word