<BUG>import java.util.ArrayList;import java.util.Collection;</BUG><CONTEXT>import java.security.Permission;import java.security.PermissionCollection;import java.security.Policy;import java.security.PrivilegedAction;import java.security.ProtectionDomain;<extra_id_0>import java.util.Collections;import java.util.ConcurrentModificationException;import java.util.Date;</CONTEXT>
import java.util.Arrays;import java.util.Collection;