}
	for p := range parentNode.Parents {
		c.unrelate(p, parent)
	}

	if _, f := c.tree[parent]; f {
		deltaLog.Fatalf("Failed to drop resource: unrelate should have handled this: %v", c.dumpTree())
	}
}

func (c *Client) unrelate(parent, child resourceKey) {
	parentNode, f := c.tree[parent]
	if !f {
		deltaLog.Fatalf("Failed to unrelate resource: unknown parent: %v, %v", parent, c.tree)
	}

				t.Errorf("%s: expected recv %v got %v", tt.desc, tt.expectedDeltaResources.lastReceived, tt.inClient.lastReceived)
			}

			tree := tt.inClient.dumpTree()
			if diff := cmp.Diff(tt.expectedTree, tree); diff != "" {
				t.Errorf("%s: expected tree %v got %v", tt.desc, tt.expectedTree, tree)
			}
		})
	}