Add docstring describing the inject instance variable

Change-Id: I00c48fc6a5f579fe72badc034fbd293f2eb41d5c
Add docs related to the new conductor feature

Change-Id: I68722a5b6bea0e404427ec7b121e7c6f90e42145
Merge "Add docs related to the new conductor feature"
Merge "Add docstring describing the inject instance variable"