Items is not defined, is there a better value to put there?

public Map confiscate (Map map) { 29 Map confiscatedItems = new HashMape> () ; for (Map. Entry entry : Items. entryset () ) { 31 if (entry. getValue () . equals (antaject: "knives") ) { 32 confiscatedItems . put (key:entry. getkey (), value: entry. getValue () ) > 33 34 items. keySet () . removeAll (confiscatedItems . keySet () ) ; 36 Create class "items" in package maplab (Source Packages) 37 9 Create class "items" in maplab.MapProblems 38 Create field "items" in maplab.MapProblems