input: Write a python function to get product listings from a given product category.
  assert get_product_listing([Product('A'), Product('B')]) == ['Listing for A', 'Listing for B']
  assert get_product_listing([]) == []
  assert get_product_listing([Product('C')]) == ['Listing for C']
output: class Product:
      def __init__(self, name):
          self.name = name
  
  def get_product_listing(products):
      return [f"Listing for {product.name}" for product in products]