match self.vcard_data.get_mut() {
                    Some(vcard_builder) => *vcard_builder = vcard_builder.with_name(
                            parameters!(),
                            name.last_name.is_empty().then(|| name.last_name),
                            name.first_name.is_empty().then(|| name.first_name),
                            name.middle_name.is_empty().then(|| name.middle_name),
                            name.prefix.is_empty().then(|| name.prefix),
                            name.suffix.is_empty().then(|| name.suffix)
                        ),
                    None => (),
                };

                --------------------------------------------------------------

                let mut types = String::new();
                if address.work {
                    types.push_str("WORK");
                }
                if address.home {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("HOME")
                }

                match self.vcard_data.get_mut() {
                    Some(vcard_builder) => *vcard_builder = vcard_builder.with_adr(
                            parameters!("TYPE" => types),
                            address.post_office_box.is_empty().then(|| address.post_office_box),
                            address.extension.is_empty().then(|| address.extension),
                            address.street.is_empty().then(|| address.street),
                            address.locality.is_empty().then(|| address.locality),
                            address.region.is_empty().then(|| address.region),
                            address.code.is_empty().then(|| address.code),
                            address.country.is_empty().then(|| address.country),
                        ),
                    None => (),
                };

                ----------------------------------------------------------------

                let mut types = String::new();
                if telephone.work {
                    types.push_str("WORK");
                }
                if telephone.home {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("HOME")
                }
                if telephone.text {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("TEXT")
                }
                if telephone.voice {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("VOICE")
                }
                if telephone.fax {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("FAX")
                }
                if telephone.cell {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("CELL")
                }
                if telephone.video {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("VIDEO")
                }
                if telephone.pager {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("PAGER")
                }
                if telephone.text_phone {
                    if types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("TEXTPHONE")
                }

                match self.vcard_data.get_mut() {
                    Some(vcard_builder) => *vcard_builder = vcard_builder.with_tel(
                            parameters!("TYPE" => types),
                            telephone.number,
                        ),
                    None => (),
                };