input: def visualize_top_languages(x_values: List[str], y_values: List[int]) -> None:
      """ Create a bar chart using Matplotlib to visualize the top 5 most popular programming languages.
      >>> x_values = ["Python", "Java", "C++", "Javascript", "C#"]
      >>> y_values = [45, 25, 15, 10, 5]
      >>> visualize_top_languages(x_values, y_values)
      """
output:     import matplotlib.pyplot as plt
  
      plt.bar(x_values, y_values)
      plt.xlabel('Programming Languages')
      plt.ylabel('Popularity')
      plt.title('Top 5 Most Popular Programming Languages')
      plt.show()