def add_cc(<EOL>self, cc_email, global_substitutions=None, is_multiple=False, p=<NUM_LIT:0>):
if isinstance(cc_email, str):<EOL><INDENT>cc_email = Cc(cc_email, None)<EOL><DEDENT>if isinstance(cc_email, tuple):<EOL><INDENT>cc_email = Cc(cc_email[<NUM_LIT:0>], cc_email[<NUM_LIT:1>])<EOL><DEDENT>if isinstance(cc_email, Email):<EOL><INDENT>p = cc_email.personalization<EOL><DEDENT>self._set_emails(<EOL>cc_email, global_substitutions, is_multiple=is_multiple, p=p)<EOL>
Adds a Cc object to the Personalization object

        :param to_emails: An Cc object
        :type to_emails: Cc
        :param global_substitutions: A dict of substitutions for all recipients
        :type global_substitutions: dict
        :param is_multiple: Create a new personilization for each recipient
        :type is_multiple: bool
        :param p: p is the Personalization object or Personalization object
                  index
        :type p: Personalization, integer, optional