@Exported
public interface PrincipalComparator
java.security.Principal
 interface typically also implements this interface to provide
 a means for comparing that object to a specified Subject.
  The comparison is achieved via the implies method.
 The implementation of the implies method determines
 whether this object "implies" the specified Subject.
 One example application of this method may be for
 a "group" object to imply a particular Subject
 if that Subject belongs to the group.
 Another example application of this method would be for
 "role" object to imply a particular Subject
 if that Subject is currently acting in that role.
 
 Although classes that implement this interface typically
 also implement the java.security.Principal interface,
 it is not required.  In other words, classes may implement the
 java.security.Principal interface by itself,
 the PrincipalComparator interface by itself,
 or both at the same time.
| Modifier and Type | Method and Description | 
|---|---|
| boolean | implies(Subject subject)Check if the specified  Subjectis implied by
 this object. | 
boolean implies(Subject subject)
Subject is implied by
 this object.
 Subject is implied by
          this object, or false otherwise.
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