"""Get distribution of confidence scores.

This function categorizes a list of confidence scores into three categories: 'high', 'medium', and 'low'. 
The categorization is based on the following thresholds:
- 'high': Confidence score >= 0.8
- 'medium': 0.6 <= Confidence score < 0.8
- 'low': Confidence score < 0.6

The function returns a dictionary with the count of confidence scores in each category.

Args:
    confidences (List[float]): A list of confidence scores, where each score is a float between 0.0 and 1.0.

Returns:
    Dict[str, int]: A dictionary with keys 'high', 'medium', and 'low', and values representing the count of 
    confidence scores in each category.
"""
You should write code starting with:
from typing import List, Dict

def _get_confidence_distribution(confidences: List[float]) -> Dict[str, int]:
    # TODO: Implement this function based on the docstring.
    pass

