Bug 22662 IClasspathContainerPage needs more context [build path]
When adding a container to the buildpath of a project, it would be nice to have more context in the page. At least the classpath of the project that the container will be added to. This way one can handle inter container dependencies (fe this library can be used in combination with this base library, etc)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/IClasspathContainerPage.java
* the finish button. Implementers typically override this method to 
	 * store the page result (new/changed classpath entry returned in 
	 * getSelection) into its model.
	 * 
	 * @return if the operation was succesful. Only when returned
	 * <code>true</code>, the wizard will close.
	 */
	public boolean finish();
	
	/**
	 * Returns the edited or created classpath container entry. This method
	 * may return <code>null</code> if no classpath container entry exists.
	 * The returned classpath entry is of kind <code>IClasspathEntry.CPE_CONTAINER
	 * </code>.
	 * 
	 * @return the classpath entry edited or created on the page.
	 */
	public IClasspathEntry getSelection();
	
	/**
	 * Sets the classpath container entry to be edited or <code>null</code> 
	 * if a new entry should be created.
	 * 
	 * @param containerEntry the classpath entry to edit or <code>null</code>.
	 * If unequals <code>null</code> then the classpath entry must be of
	 * kind <code>IClasspathEntry.CPE_CONTAINER</code>
	 */
	public void setSelection(IClasspathEntry containerEntry);
		
}