Function resvg_options_set_fantasy_family 

#[unsafe(no_mangle)]
pub extern "C" fn resvg_options_set_fantasy_family(
    opt: *mut resvg_options,
    family: *const c_char,
)

@brief Sets the fantasy font family.

Must be UTF-8. NULL is not allowed.

Has no effect when the text feature is not enabled.

Default: Papyrus on macOS, Impact on other OS’es