What role does Goddess Saraswati play in the composition of the Sai Satcharitra, as mentioned in Chapter 1?

In Chapter 1 of the Sai Satcharitra, the author invokes Goddess Saraswati, highlighting her indispensable role in the creation of the book. The text posits that without the grace of this Goddess of Speech and Mother of the World, no literature can be achieved, and the author questions how he could possibly write the book without her mercy. He bows to her and asks her to make his tongue her swan and ride upon it. The ultimate plea, as found in this chapter, is for her to make the author an instrument to feed the nectar of Sai's life to everyone. The text further identifies Sai himself as being Goddess Saraswati, singing his own life story for his devotees' salvation.