given:
        specUnderTest.environment("SOMEVAR", "someval")

        when:
        specUnderTest.setEnvironment(OTHERVAR: "otherval")

        then:
        specUnderTest.getEnvironment() == [OTHERVAR: "otherval"]
    }

    def "adding variables after setting environment is working"() {
        given:
        specUnderTest.setEnvironment(SOMEVAR: "someval")

        when:

        convention.extensionsAsDynamicObject.prop
    }

    @Test void mixesInEachMethodOfConventionObject() {
        assertEquals(convention1.meth('somearg'), convention.extensionsAsDynamicObject.meth('somearg'))
    }

    @Test void conventionObjectsMethodsHavePrecedenceAccordingToOrderAdded() {
        assertEquals(convention1.meth(), convention.extensionsAsDynamicObject.meth())
    }

                class Source {
                    val someVal: String = "some"
                    var someVar: String = "some"
                    fun foo(): String = "bar"
                }
            """,
            v2 = """
                class Source {
                    val someVal: String? = null
                    var someVar: String? = null
                    fun foo(): String? = null
                }
            """