What topics does the author state will be covered in Chapter 42, and how is Sai Baba described in the chapter's introduction?

The beginning of Chapter 42 of the Sai Satcharitra outlines the chapter's focus after offering initial salutations. The author states that the chapter will describe Sai Baba's fundamental nature, specifically exploring whether his mind was intense or soft. More significantly, it promises to give a detailed account of Baba leaving his physical body. In this introductory section, Sai is described in reverent terms as the 'Wish-fulfilling Tree' (Kalpataru) for his devotees, the embodiment of Brahman wearing a loincloth, and the one who wanders the banks of the sacred Godavari river.