Bug 297731 [Filters] We could have IResourceFilterDescription#delete instead of IContainer#removeFilter ?
This is the pattern used for resource markers. It is just a minor issue, however would make new API look more consistent.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
IFilterMatcherDescriptor.ARGUMENT_TYPE_STRING);
		return false;
	}
	public int getChildrenLimit() {
		IFilterMatcherDescriptor descriptor = FilterTypeUtil.getDescriptor(id);
		if (descriptor != null) {
			if (descriptor.getArgumentType().equals(
					IFilterMatcherDescriptor.ARGUMENT_TYPE_FILTER_MATCHER))
				return 1;
			if (descriptor.getArgumentType().equals(
					IFilterMatcherDescriptor.ARGUMENT_TYPE_FILTER_MATCHERS))
				return Integer.MAX_VALUE;
		}
		return 0;
	}
	public boolean equals(Object o) {
		if (!(o instanceof FilterCopy))
			return false;
		FilterCopy filter = (FilterCopy) o;
		return serialNumber == filter.serialNumber;
	}
	public int getSerialNumber() {
		return serialNumber;
	}
	public FilterCopy findBySerialNumber(int number) {
		LinkedList pending = new LinkedList();
		pending.add(this);
		while (!pending.isEmpty()) {
			FilterCopy filter = (FilterCopy) pending.getFirst();
			pending.removeFirst();