Descendants(family tree, name, distance) description: family tree is a dictionary where the key is a person’s name (string) and the corresponding value is a list of his/her children’s names (string). the function takes a name and returns all its descendants that are distance generations apart. assume that all names (both keys and values) are unique. however, some names might not have any children. parameters: family_tree (dictionary), name (string), distance (positive int) return value: list of strings (order of names doesn’t matter), and if there are no descendants an empty list example: