def METHOD_NAME(self):
    """
    Returns the size of the source.
    :return: int
    """
    min_address = self.minaddr()
    max_address = self.maxaddr()
    METHOD_NAME = max_address - min_address + 1
    # Round up to nearest word
    word_size = 4
    number_of_words = (METHOD_NAME + (word_size - 1)) // word_size
    METHOD_NAME = number_of_words * word_size
    return METHOD_NAME