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## org.jboss.portal.portlet.info
Interface PreferencesInfo

All Known Implementing Classes:
  ContainerPreferencesInfo

    public interface PreferencesInfo

Since:
  2.4
Version:
  $Revision: 5448 $
Author:
  Julien Viet

Method Summary
`java.util.Set<java.lang.String>` | `getKeys()` Return the immutable set of keys.
`PreferenceInfo` | `getPreference(java.lang.String key)` A preference specified by its key.

Method Detail

### getKeys

    java.util.Set<java.lang.String> getKeys()

  Return the immutable set of keys.

  Returns:
    the keys

### getPreference

    PreferenceInfo getPreference(java.lang.String key)
                                 throws java.lang.IllegalArgumentException

  A preference specified by its key.

  Parameters:
    `key` - the key
  Returns:
    the preference info or null if it does not exist
  Throws:
    `java.lang.IllegalArgumentException` - if the key is null

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