What does Chapter 16 of the Sai Satcharitra teach about the nature and role of a Sadguru?

Chapter 16 of the Sai Satcharitra portrays the Sadguru as a supreme spiritual sovereign, referring to him as a 'Universal Monarch' seated on a 'throne of peace.' The chapter emphasizes that a Sadguru is 'Aptakama,' meaning his own desires are always fulfilled, and his primary role is to fulfill the disciple's desire for service, thereby making the disciple desireless. It is stated that the Guru takes a physical body specifically to help others and uplift the poor and lowly. Furthermore, the text highlights the Guru's unparalleled generosity by comparing him to a wish-fulfilling gem, noting that while the gem gives what is wished for, the Guru gives the 'Unthinkable Object'—Brahman itself—to his devotee.