def METHOD_NAME(self, mx: int, my: int) -> np.uint8:
    """
    Get the cost of a cell in the costmap using map coordinate XY.
    Args
    ----
        mx (int): map coordinate X to get cost
        my (int): map coordinate Y to get cost
    Returns
    -------
        np.uint8: cost of a cell
    """
    return self.costmap[self.getIndex(mx, my)]