Given an Email.Message object, gets the content-type payload
        as specified by @content_type. This is the actual body of the
        email.
        @Params
        msg - Email.Message object to get message content for
        content_type - Type of content to get from the email
        @Return
        String content of the email in the given type

def get_content_type(self, msg, content_type="HTML"):
        """
        Given an Email.Message object, gets the content-type payload
        as specified by @content_type. This is the actual body of the
        email.
        @Params
        msg - Email.Message object to get message content for
        content_type - Type of content to get from the email
        @Return
        String content of the email in the given type
        """
        if "HTML" in content_type.upper():
            content_type = self.HTML
        elif "PLAIN" in content_type.upper():
            content_type = self.PLAIN

        for part in msg.walk():
            if str(part.get_content_type()) == content_type:
                return str(part.get_payload(decode=True))