Finally, Gradle selects the appropriate variant by looking at the variant attributes:

- the consumer wants a variant with attributes `org.gradle.usage=java-api`
- the producer has a matching variant (`apiElements`)
- the producer has a non-matching variant (`runtimeElements`)

Gradle provides the artifacts and dependencies from the `apiElements` variant to the consumer.

== A more complicated example

	}

	x := base.Ctxt.Lookup(s.curfn.LSym.Name + ".opendefer")
	x.Set(obj.AttrContentAddressable, true)
	s.curfn.LSym.Func().OpenCodedDeferInfo = x

	off := 0
	off = objw.Uvarint(x, off, uint64(-s.deferBitsTemp.FrameOffset()))
	off = objw.Uvarint(x, off, uint64(-firstOffset))
}

// buildssa builds an SSA function for fn.
// worker indicates which of the backend workers is doing the processing.

	// lots of varint sizes.
	//
	// Add 1 because we might also write a traceAllocFreeTypesBatch byte.
	var flushed bool
	w, flushed = w.ensure(1 + maxBytes)
	if flushed {
		// Annotate the batch as containing types.
		w.byte(byte(traceAllocFreeTypesBatch))
	}

	// Emit type.
	w.varint(uint64(node.id))
	w.varint(uint64(uintptr(unsafe.Pointer(typ))))
	w.varint(uint64(typ.Size()))

	// replicas is the number of Pods created by the StatefulSet controller.
	Replicas int32 `json:"replicas" protobuf:"varint,2,opt,name=replicas"`

	// readyReplicas is the number of pods created for this StatefulSet with a Ready Condition.
	ReadyReplicas int32 `json:"readyReplicas,omitempty" protobuf:"varint,3,opt,name=readyReplicas"`

	// replicas is the number of Pods created by the StatefulSet controller.
	Replicas int32 `json:"replicas" protobuf:"varint,2,opt,name=replicas"`

	// readyReplicas is the number of pods created by this StatefulSet controller with a Ready Condition.
	ReadyReplicas int32 `json:"readyReplicas,omitempty" protobuf:"varint,3,opt,name=readyReplicas"`

	// replicas is the number of Pods created by the StatefulSet controller.
	Replicas int32 `json:"replicas" protobuf:"varint,2,opt,name=replicas"`

	// readyReplicas is the number of pods created by this StatefulSet controller with a Ready Condition.
	ReadyReplicas int32 `json:"readyReplicas,omitempty" protobuf:"varint,3,opt,name=readyReplicas"`

  %1 = "tf.AddN"(%arg0, %arg1) : (tensor<!tf_type.variant<tensor<*xi32>>>, tensor<!tf_type.variant<tensor<*xi32>>>) -> tensor<!tf_type.variant<tensor<*xi32>>>

  %zeros-like = "tf.ZerosLike"(%addn) : (tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>
  // CHECK-NEXT: %[[ADDN2:.*]] = "tf.AddN"(%[[ADDN]], %[[ZEROS_LIKE]]) : (tensor<10xf32>, tensor<10xf32>) -> tensor<10xf32>
  %addn2 = "tf.AddN"(%addn, %zeros-like) : (tensor<!tf_type.variant<tensor<f32>>>, tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>

        then:
        failure.assertHasCause("""Unable to find a variant of org:foo:1.0 providing the requested capability org:feature-3:
   - Variant api provides org:foo:1.0
   - Variant feature1 provides org:feature-1:1.0
   - Variant feature2 provides org:feature-2:1.0
   - Variant runtime provides org:foo:1.0""")
    }

    def "can select a variant providing the required set of capabilities"() {
        given:

// -----

func.func @testIfThen(%arg0: tensor<!tf_type.variant>) -> tensor<!tf_type.variant> {
  func.return %arg0 : tensor<!tf_type.variant>
}
func.func @testIfElse(%arg0: tensor<!tf_type.variant>) -> tensor<!tf_type.variant> {
  func.return %arg0 : tensor<!tf_type.variant>
}

// CHECK-LABEL: func @testIfCasts(%arg0: tensor<i1>, %arg1: tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>