@Nullable
	public Ikon getContainerIcon(@Nonnull ConfigContainer container) {
		return getContainerIcon(container.getId());
	}
@param container
		Container to get icon of for it's {@link ConfigContainer#getId()}.

@return Associated icon. May be {@code null} for no association.
recaf-ui/src/main/java/software/coley/recaf/services/config/ConfigIconManager.java