then:
        ServiceLookupException e = thrown()
        e.message == "Cannot use decorator method ${decoratorProvider.class.simpleName}.${methodName}Long() when no parent registry is provided."

        where:
        decoratorProvider                        | methodName
        new TestDecoratingProviderWithCreate()   | 'create'
        new TestDecoratingProviderWithDecorate() | 'decorate'
    }

    private void warnOnInvalidInternalAPIUsage(String methodName, ProperMethodUsage... properUsages) {
        warnOnDeprecatedUsage(methodName, true, properUsages);
    }

    private void warnOnDeprecatedUsage(String methodName, ProperMethodUsage... properUsages) {
        warnOnDeprecatedUsage(methodName, false, properUsages);
    }

        }
        return nextBatch.isEmpty()
            ? null
            : nextBatch.getSource();
    }

    private void assertMutatingMethodAllowed(String methodName) {
        MutationGuards.of(getProjectConfigurator()).assertMutationAllowed(methodName, this, Project.class);
    }

    @Override
    public ProjectState getOwner() {
        return owner;
    }

    @Override

		b.pos = p.pos()
		b.Value = p.lit
		b.Kind = p.kind
		b.Bad = p.bad
		p.next()
		return b
	}
	return nil
}

// MethodSpec        = MethodName Signature | InterfaceTypeName .
// MethodName        = identifier .
// InterfaceTypeName = TypeName .
func (p *parser) methodDecl() *Field {
	if trace {
		defer p.trace("methodDecl")()
	}

	f := new(Field)

                    assert getSharedResources != null
                    assert !trace.any {
                        it.className == "${AbstractTask.name}" && it.methodName == getSharedResources.name
                    }
                    objects.newInstance(NestedBean)
                })
                @Internal

====
<1> The receiver is a link:https://docs.groovy-lang.org/latest/html/api/groovy/lang/GroovyObject.html[GroovyObject] and provides Kotlin helpers
<2> The `GroovyObject` API is available
<3> Invoke the `methodName` method, passing some parameters
<4> Configure the `blockName` property, maps to a `Closure` taking method invocation