Bug 289599 [Preferences] PreferenceStore.setToDefault fires redundant PropertyChangeEvents
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceStore.java
}
	/*
	 * (non-Javadoc) Method declared on IPreferenceStore.
	 */
	public boolean isDefault(String name) {
		return (!properties.containsKey(name) && defaultProperties
				.containsKey(name));
	}
	/**
	 * Prints the contents of this preference store to the given print stream.
	 * 
	 * @param out
	 *            the print stream
	 */
	public void list(PrintStream out) {
		properties.list(out);
	}
	/**
	 * Prints the contents of this preference store to the given print writer.
	 * 
	 * @param out
	 *            the print writer
	 */
	public void list(PrintWriter out) {
		properties.list(out);
	}
	/**
	 * Loads this preference store from the file established in the constructor
	 * <code>PreferenceStore(java.lang.String)</code> (or by
	 * <code>setFileName</code>). Default preference values are not affected.