question: methods that abstract the set and get of the stack values of user realm . concode_field_sep ThreadLocal<Stack<String>> tChrootStack concode_elem_sep ThreadLocal<Stack<UserRegistry>> tUserRegistryStack concode_elem_sep ThreadLocal<Stack<UserRealm>> tUserRealmStack concode_elem_sep ThreadLocal<Stack<Integer>> tTenantIdStack concode_elem_sep ThreadLocal<Map<String,Object>> tAttributes concode_elem_sep ThreadLocal<Stack<Integer>> tCallerTenantIdStack concode_elem_sep ThreadLocal<Stack<String>> tUserIdStack concode_elem_sep ThreadLocal<Stack<Map<String,String>>> tLocalPathMapStack concode_field_sep void removeChroot concode_elem_sep void setCallerTenantId concode_elem_sep void removeUserRegistry concode_elem_sep String getChroot concode_elem_sep void removeCallerTenantId concode_elem_sep void setAttribute concode_elem_sep Object getAttribute concode_elem_sep void removeUser concode_elem_sep void setTenantId concode_elem_sep UserRegistry getUserRegistry concode_elem_sep void removeAttributes concode_elem_sep void setUser concode_elem_sep int getCallerTenantId concode_elem_sep void removeLocalPathMap concode_elem_sep void removeAttribute concode_elem_sep Stack<String> initialValue concode_elem_sep Stack<UserRealm> initialValue concode_elem_sep Stack<Integer> initialValue concode_elem_sep Stack<Integer> initialValue concode_elem_sep Stack<String> initialValue concode_elem_sep Stack<UserRegistry> initialValue concode_elem_sep Stack<Map<String,String>> initialValue concode_elem_sep Map<String,Object> initialValue concode_elem_sep void removeTenantId concode_elem_sep UserRealm getUserRealm concode_elem_sep void setChroot concode_elem_sep int getTenantId concode_elem_sep Map<String,String> getLocalPathMap concode_elem_sep void setUserRegistry concode_elem_sep void setLocalPathMap concode_elem_sep void removeUserRealm concode_elem_sep void setUserRealm
target: String function ( ) { Stack < String > loc0 = tUserIdStack . get ( ) ; if ( loc0 == null ) { tUserIdStack . remove ( ) ; loc0 = tUserIdStack . get ( ) ; } if ( loc0 . isEmpty ( ) ) { return null ; } return loc0 . peek ( ) ; }