Function libffi_sys::ffi_prep_java_raw_closure

pub unsafe extern "C" fn ffi_prep_java_raw_closure(
    arg1: *mut ffi_java_raw_closure, 
    cif: *mut ffi_cif, 
    fun: Option<unsafe extern "C" fn(_: *mut ffi_cif, _: *mut c_void, _: *mut ffi_java_raw, _: *mut c_void)>, 
    user_data: *mut c_void
) -> ffi_status