Resolving class definition conflicts in googleads/googleads-php-lib

Hello,

When using composer, classes from https://github.com/googleads/googleads-php-lib are available in the global namespace due to the library's use of composer's "classmap".

The README.ME in the repository suggest that when using v201601 of the library, this has to be added to the project's composer.json:

  "classmap": [      "vendor/googleads/googleads-php-lib/src/Google/Api/Ads/AdWords/Util/v201601"    ]

This loads classes for the used version from the "Util" directory only. However, I'm not sure how I can autoload only v201601 classes from other needed directories (e.g. services from AdWords/v201601 only).

Currently, if I import a class, e.g.:

"use CampaignOperation", the IDE is confused because it can see multiple class declaration for all API versions. 

I'm not sure if this warning can be safely ignored as it's only the IDE being confused, or the lib version I'm using has to be explicitly autoloaded with composer.

Also the README says that:

"Thus, if you use composer, you will still need to manually copy over the version of the utility files you need to use. "

I do not understand that, do I need to copy files manually somewhere?

I hope you will help me get going with this lib. Thanks!

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