def list_to_string(list_of_strings):
    """
    Function that takes a list of string and converts it to a string.
    For example: ["apple", "banana", "cherry"] is changed to "apple; banana; cherry"
    """
    string = ''
    if list_of_strings is not None:
        for item in list_of_strings:
            if len(string) > 0:
                string += '; '
            string += item
    return string
