Function duckdb_copy_function_finalize_get_extra_info 

pub unsafe extern "C" fn duckdb_copy_function_finalize_get_extra_info(
    info: duckdb_copy_function_finalize_info,
) -> *mut c_void

Retrieves the extra info pointer of the copy function.

@param info The finalize info provided to the finalize function @return The extra info pointer.