public static <Result> TaskBuilder<Result> create(Callable<Result> action) {
        return new TaskBuilder<Result>().action(action);
    }
public static < Result > TaskBuilder < Result > create ( Callable < Result > action ) { return new TaskBuilder < Result > ( ) . action ( action ) ; }
根据Callable初始化TaskBuilder

@param action   Callable
@param <Result> Result Type
@return TaskBuilder