warning_producer_one.WarningsReturns([]string{"Hello", "Darling"})
				warningsCollector := net.NewWarningsCollector(ui, warning_producer_one)

				Expect(warningsCollector.PrintWarnings).NotTo(Panic())
			})

			It("does not print out duplicate warnings", func() {
				warning_producer_one := new(netfakes.FakeWarningProducer)
				warning_producer_one.WarningsReturns([]string{"Hello Darling"})
				warning_producer_two := new(netfakes.FakeWarningProducer)
				warning_producer_two.WarningsReturns([]string{"Hello Darling"})
				warningsCollector := net.NewWarningsCollector(ui, warning_producer_one, warning_producer_two)

				warningsCollector.PrintWarnings()
				Expect(ui.WarnCallCount()).To(Equal(1))
				Expect(ui.WarnArgsForCall(0)).To(ContainSubstring("Hello Darling"))
			})

			It("does not print out Endpoint deprecated warnings", func() {
				warning_producer_one := new(netfakes.FakeWarningProducer)
				warning_producer_one.WarningsReturns([]string{"Endpoint deprecated"})
				warning_producer_two := new(netfakes.FakeWarningProducer)
				warning_producer_two.WarningsReturns([]string{"A warning"})
				warningsCollector := net.NewWarningsCollector(ui, warning_producer_one, warning_producer_two)

				warningsCollector.PrintWarnings()
				Expect(ui.WarnCallCount()).To(Equal(1))
				Expect(ui.WarnArgsForCall(0)).To(ContainSubstring("A warning"))
			})
		})
	})