GroupPrincipal.java

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package java.nio.file.attribute;

/**
 * A {@code UserPrincipal} representing a <em>group identity</em>, used to
 * determine access rights to objects in a file system. The exact definition of
 * a group is implementation specific, but typically, it represents an identity
 * created for administrative purposes so as to determine the access rights for
 * the members of the group. Whether an entity can be a member of multiple
 * groups, and whether groups can be nested, are implementation specified and
 * therefore not specified.
 *
 * @since 1.7
 *
 * @see UserPrincipalLookupService#lookupPrincipalByGroupName
 */

public interface GroupPrincipal extends UserPrincipal { }