Bug 186403 [KeyBindings] provide conflict information to users outside of logging
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/CachedBindingSet.java
* 
	 * @param activeContextTree
	 *            The set of context identifiers that were active when this
	 *            binding set was calculated; may be empty. If it is
	 *            <code>null</code>, then the contexts were disregarded in
	 *            the computation. This is a map of context id (
	 *            <code>String</code>) to parent context id (
	 *            <code>String</code>). This is a way of caching the look of
	 *            the context tree at the time the binding set was computed.
	 * @param locales
	 *            The locales that were active when this binding set was
	 *            calculated. The first element is the currently active locale,
	 *            and it is followed by increasingly more general locales. This
	 *            must not be <code>null</code> and must contain at least one
	 *            element. The elements can be <code>null</code>, though.
	 * @param platforms
	 *            The platform that were active when this binding set was
	 *            calculated. The first element is the currently active
	 *            platform, and it is followed by increasingly more general
	 *            platforms. This must not be <code>null</code> and must
	 *            contain at least one element. The elements can be
	 *            <code>null</code>, though.
	 * @param schemeIds
	 *            The scheme that was active when this binding set was
	 *            calculated, followed by its ancestors. This may be
	 *            <code>null</code or empty. The
	 *            elements cannot be <code>null</code>.
	 */
	CachedBindingSet(final Map activeContextTree, final String[] locales,
			final String[] platforms, final String[] schemeIds) {