Function wasmtime_linker_define_unknown_imports_as_default_values 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn wasmtime_linker_define_unknown_imports_as_default_values(
    linker: &mut wasmtime_linker_t,
    store: WasmtimeStoreContextMut<'_>,
    module: &wasmtime_module_t,
) -> Option<Box<wasmtime_error_t>>