Bug 52064 Content assist in "New Class" Dialog shows interfaces
Content Assist is available for the superclass in M7. However it also lists interfaces. If an interface is selected, the generated class "extends" it instead of "implementing" it.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
* 
	 * @return the selected modifiers
	 * @see Flags 
	 */	
	public int getModifiers() {
		int mdf= 0;
		if (fAccMdfButtons.isSelected(PUBLIC_INDEX)) {
			mdf+= F_PUBLIC;
		} else if (fAccMdfButtons.isSelected(PRIVATE_INDEX)) {
			mdf+= F_PRIVATE;
		} else if (fAccMdfButtons.isSelected(PROTECTED_INDEX)) {	
			mdf+= F_PROTECTED;
		}
		if (fOtherMdfButtons.isSelected(ABSTRACT_INDEX)) {	
			mdf+= F_ABSTRACT;
		}
		if (fOtherMdfButtons.isSelected(FINAL_INDEX)) {	
			mdf+= F_FINAL;
		}
		if (fOtherMdfButtons.isSelected(STATIC_INDEX)) {	
			mdf+= F_STATIC;
		}
		return mdf;
	}
	/**
	 * Sets the modifiers.
	 * 
	 * @param modifiers <code>F_PUBLIC</code>, <code>F_PRIVATE</code>, 
	 * <code>F_PROTECTED</code>, <code>F_ABSTRACT, F_FINAL</code>
	 * or <code>F_STATIC</code> or, a valid combination.