Bug 119603 [api][content assist] allow contributions to filter and sort proposals
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
/**
	 * A named preferences that controls if types that start with a lower case letters get added by the
	 * "Organize Import" operation.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 */
	public static final String ORGIMPORTS_IGNORELOWERCASE= "org.eclipse.jdt.ui.ignorelowercasenames"; 
	/**
	 * A named preference that specifies whether children of a compilation unit are shown in the package explorer.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 */
	public static final String SHOW_CU_CHILDREN= "org.eclipse.jdt.ui.packages.cuchildren"; 
	/**
	 * A named preference that controls whether the package explorer's selection is linked to the active editor.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 */
	public static final String LINK_PACKAGES_TO_EDITOR= "org.eclipse.jdt.ui.packages.linktoeditor"; 
	/**
	 * A named preference that controls whether the hierarchy view's selection is linked to the active editor.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 */
	public static final String LINK_TYPEHIERARCHY_TO_EDITOR= "org.eclipse.jdt.ui.packages.linktypehierarchytoeditor";