ANDROID_PROGUARD
When this property is set to true that enables the ProGuard tool to shrink, optimize, and obfuscate the code by removing unused code and renaming classes, fields, and methods with semantically obscure names. This property is initialized by the value of the CMAKE_ANDROID_PROGUARD variable if it is set when a target is created.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.5/prop_tgt/ANDROID_PROGUARD.html