MULTIDEX_KEEP_PROGUARD
object MULTIDEX_KEEP_PROGUARD : MultipleArtifact<RegularFile>, Artifact.Transformable, Artifact.Replaceable
Text files with additional ProGuard rules to be used to determine which classes are compiled into the main dex file.
If set, rules from these files are used in combination with the default rules used by the build system.
Initialized from DSL com.android.build.api.dsl.VariantDimension.multiDexKeepProguard