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

You are given a 2D integer array ranges and two integers left and right. Each ranges[i] = [starti, endi] represents an inclusive interval between starti and endi.
Return true if each integer in the inclusive range [left, right] is covered by at least one interval in ranges. Return false otherwise.
An integer x is covered by an interval ranges[i] = [starti, endi] if starti <= x <= endi.
 
Please complete the following python code precisely:
```python
class Solution:
    def isCovered(self, ranges: List[List[int]], left: int, right: int) -> bool:
```