def METHOD_NAME(self, position):
    """
    Mark a certain position with the pheromone of path intensity
    @param position the position in question
    """
    intensity = self.getpheromone(position) + self.pathintensity
    if intensity < self.maxpheromone:
        self.setpheromone(position, intensity)
    else:
        self.setpheromone(position, self.maxpheromone)