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

You are given a binary string s. In one second, all occurrences of "01" are simultaneously replaced with "10". This process repeats until no occurrences of "01" exist.
Return the number of seconds needed to complete this process.
 
Please complete the following python code precisely:
```python
class Solution:
    def secondsToRemoveOccurrences(self, s: str) -> int:
```