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cfg_if::cfg_if! { if #[cfg(target_os = "android")] { mod android; pub(crate) use android::*; } else if #[cfg(target_vendor = "apple")] { mod apple; pub(crate) use apple::*; } else if #[cfg(target_os = "linux")] { mod linux; pub(crate) use linux::*; } else if #[cfg(target_os = "windows")] { mod windows; pub(crate) use windows::*; } else { mod unsupported; pub(crate) use unsupported::*; } }