Generated service APIs no longer contain implementations for methods that return complex values.

[Steve Niemitz]

It looks like as of C++ generator version 1.5.1 methods on objects that return non-primitives no longer have implementations.

For example: in the calendar API (bundled with the C++ SDK), CalendarList::get_items no longer has an implementation. [1]

This seems to be the case across other APIs, I ran into this issue in the compute API as well.

Is this a known issue?  There's a similar bug that was reported on the github project that was closed as won't fix [2].  There seems to be another bug on the generator project [3] that has been open for almost a year now.  Is this C++ SDK even recommended for use in production? 

[1] https://github.com/google/google-api-cpp-client/commit/7edc84885e49e1455a9654535b7c9116d1c578b3#diff-844d6ba5afa622a3ae5a22716a0fa1a5L147

[2] https://github.com/google/google-api-cpp-client/issues/25

[3] https://github.com/google/apis-client-generator/issues/19