What was Cholkar's role in writing the Sai Leela book, according to the text?

The provided text from Chapter 2 does not contain the name 'Cholkar.' It describes the author, later identified as Hemadpant, receiving permission from Sai Baba to compile a collection of stories. However, Baba clarifies that the author is merely a 'pretext' for the work. Sai states, 'I myself shall write my own story!' and promises His full help on the condition that the author dissolves his ego and surrenders completely at His feet. Therefore, according to Chapter 2, the author's primary role was to act as a surrendered instrument through whom Sai Baba would manifest the stories.