Please solve the programming task below using a self-contained code snippet in a markdown code block.

The complement of an integer is the integer you get when you flip all the 0's to 1's and all the 1's to 0's in its binary representation.

For example, The integer 5 is "101" in binary and its complement is "010" which is the integer 2.

Given an integer n, return its complement.
 
Please complete the following python code precisely:
```python
class Solution:
    def bitwiseComplement(self, n: int) -> int:
```