pub trait EmojiExt {
// Required methods
fn is_regional_indicator_symbol(self) -> bool;
fn is_emoji_modifier(self) -> bool;
fn is_emoji_combining_enclosing_keycap(self) -> bool;
fn is_emoji(self) -> bool;
fn is_emoji_modifier_base(self) -> bool;
fn is_tag_spec_char(self) -> bool;
fn is_emoji_cancel_tag(self) -> bool;
fn is_zwj(self) -> bool;
}