parameters: (self, system_id)
docstring: Sets the system identifier of this InputSource.
docstring_summary: Sets the system identifier of this InputSource.
docstring_tokens: Sets the system identifier of this InputSource .
function: def setSystemId(self, system_id):
          "Sets the system identifier of this InputSource."
          self.__system_id = system_id
function_tokens: def setSystemId ( self , system_id ) : self . __system_id = system_id