<required>true</required>
          <description>The identifier for this artifact that is unique within the group given by the
            group ID. An artifact is something that is either produced or used by a project.
            Examples of artifacts produced by Maven for a project include: JARs, source and binary
            distributions, and WARs.</description>
          <type>String</type>
        </field>
        <field>

            SmallVector<unsigned int, 2> port)
      : producer(producer), port(port) {}

  raw_ostream& print(raw_ostream& os) const {
    if (auto* op = producer.dyn_cast<Operation*>())
      os << "op " << op->getName();
    if (auto ba = producer.dyn_cast<BlockArgument>())
      os << "block_arg " << ba.getArgNumber();
    os << formatv(" [{0}]", llvm::make_range(port.begin(), port.end()));
    return os;

scattered uniformly and evenly through the whole Space MN, and so being every where mix'd in the same Proportion, they must every where produce the same Colour. And therefore, since by this Mixture they produce white in the Exterior Spaces MP and TN, they must also produce white in the Interior Space PT. This is the reason of the Composition by which Whiteness was produced in this Experiment, and by what other way soever I made the like Composition, the Result was Whiteness. Lastly, If with the Teeth of...

        includedBuild.with {
            it.createDir("producer")
            settingsFile << """
                include(":producer")
            """
            file("project-artifact.jar").text = "project artifact"
            buildFile << declareAttributes() << """
                project(':producer') {
                    group = "com.test"
                    artifacts {

results in a runtime error, the runtime error is logged, and the validation failure message is produced as if the messageExpression field were unset. If messageExpression evaluates to an empty string, a string with only spaces, or a string that contains line breaks, then the validation failure message will also be produced as if the messageExpression field were unset, and the fact that messageExpression produced an empty string/string with only spaces/string with line breaks will be logged. messageExpression...

results in a runtime error, the runtime error is logged, and the validation failure message is produced as if the messageExpression field were unset. If messageExpression evaluates to an empty string, a string with only spaces, or a string that contains line breaks, then the validation failure message will also be produced as if the messageExpression field were unset, and the fact that messageExpression produced an empty string/string with only spaces/string with line breaks will be logged. messageExpression...

  // All concat operands must be defined by ops.
  Operation* first_arg_op = op.getValues().front().getDefiningOp();
  if (first_arg_op == nullptr) return failure();

  // All concat operands must be produced by the coeff-wise unary operation.
  if (!first_arg_op->hasTrait<OpTrait::TF::CwiseUnary>()) return failure();

  // All concat operands must be defined by the op of same kind.

results in a runtime error, the runtime error is logged, and the validation failure message is produced as if the messageExpression field were unset. If messageExpression evaluates to an empty string, a string with only spaces, or a string that contains line breaks, then the validation failure message will also be produced as if the messageExpression field were unset, and the fact that messageExpression produced an empty string/string with only spaces/string with line breaks will be logged. messageExpression...

                api1 files(producer1)
                api2 files(producer2)
            }
        """)

        when:
        run "resolveapi1", "resolveapi2"
        then:
        executedAndNotSkipped(":resolveapi1", ":resolveapi2")
        outputContains("artifacts: [producer1.jar (producer1.jar)]")
        outputContains("artifacts: [producer2.jar (producer2.jar)]")
    }

	// (including modload.ImportMissingError, ImportMissingSumError, and the
	// corresponding "cannot find package %q in any of" GOPATH-mode error
	// produced in build.(*Context).Import; modload.AmbiguousImportError,
	// and modload.PackageNotInModuleError; and the malformed module path errors
	// produced in golang.org/x/mod/module.CheckMod) implement an interface
	// to make it easier to check for them? That would save us from having to