question: public boolean checkRootByBuildTags ( ) { String buildTags = android . os . Build . TAGS ; if ( buildTags != null && buildTags . contains ( SU_TAG ) ) { if ( Constants . DEBUG_MODE_ENABLED ) { Log . d ( TAG , "Build tags are found in the device" ) ; } return true ; } return false ; }
target:  Returns true if the OS build tags contains "test-keys".