Function ostree_sys::ostree_sysroot_stage_overlay_initrd

pub unsafe extern "C" fn ostree_sysroot_stage_overlay_initrd(
    self_: *mut OstreeSysroot, 
    fd: c_int, 
    out_checksum: *mut *mut c_char, 
    cancellable: *mut GCancellable, 
    error: *mut *mut GError
) -> gboolean

This is supported on crate feature v2020_7 only.