<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_point_in_block(cls, x, y, block_idx, block_size):
 """Get point coordinates in next block. Parameters x : `int` X coordinate in current block. y : `int` Y coordinate in current block. block_index : `int` Current block index in next block. block_size : `int` Current block size. Raises ------ IndexError If block index is out of range. Returns ------- (`int`, `int`) Point coordinates. """

        if block_idx == 0:
            return y, x
        if block_idx == 1:
            return x, y + block_size
        if block_idx == 2:
            return x + block_size, y + block_size
        if block_idx == 3:
            x, y = block_size - 1 - y, block_size - 1 - x
            return x + block_size, y
        raise IndexError('block index out of range: %d' % block_idx)