User turns:
user: I've just put together a file named 'ProjectOverview.txt' into my working directory where I've laid out an initial summary of the project. But as I foresee possible modifications down the line, I'd like to modify the file content by putting 'To be discussed' in it.
user: For peace of mind, let's ensure both 'ProjectOverview.txt' and another file are identical.
user: The other file is 'Draft.txt'. 
user: Lastly, I'd like to broadcast my recent documentation progress on Twitter. Please draft a tweet announcing a brief project update, as 'Initial summary of the project. To be discussed.', tagging it with 'ProjectUpdate' and mentioning @manager and @team_lead to keep everyone in the loop. My user name is tech_guru and password is securePass123.

Involved APIs: TwitterAPI
GorillaFileSystem
Ground-truth function call path:
GorillaFileSystem.touch
GorillaFileSystem.diff
GorillaFileSystem.cp
GorillaFileSystem.mv
GorillaFileSystem.cat
TwitterAPI.post_tweet
TwitterAPI.mention