question: public List < LocalVariable > visibleVariables ( ) throws AbsentInformationException { validateStackFrame ( ) ; createVisibleVariables ( ) ; List < LocalVariable > mapAsList = new ArrayList < LocalVariable > ( visibleVariables . values ( ) ) ; Collections . sort ( mapAsList ) ; return mapAsList ; }
target:  Return the list of visible variable in the frame. Need not be synchronized since it cannot be provably stale.