What specific methods did Sai Baba use to guide his followers from Saguna devotion toward Nirguna realization, as detailed in Chapter 11?

As detailed in Chapter 11, Sai Baba employed countless means to help his devotees realize the Nirguna, or unmanifest, reality, tailoring his methods to their spiritual eligibility. The chapter lists several specific techniques he used to cultivate this understanding. These included sending a devotee to another country, confining another to solitude within Shirdi, locking one in the Wada (lodging), or assigning them the task of reading scriptures. By engaging in these practices for years, a devotee's longing for the Nirguna would grow, keeping their mind constantly occupied with Baba’s essence.