'Initialize SignatorySection Page
:param container: Container Section Page Object of the Signatory section
:param prefix: css selector of the container element
:param index: index of section in the signatory list on the page
:param mode: \'details\' or \'edit\', showing whether signatory is being displayed or edited
:return:'

def __init__(self, container, prefix, mode, index):

    self.prefix = prefix
    self.index = index
    self.mode = mode
    super(SignatorySectionPage, self).__init__(container.browser, **container.course_info)
