val requirements = RunTasksRequirements(startParameter)
            registerCommonBuildTreeServices(registration, buildModelParameters, buildFeatures, requirements)
        }
    }

    private
    fun registerCommonBuildTreeServices(registration: ServiceRegistration, modelParameters: BuildModelParameters, buildFeatures: DefaultBuildFeatures, requirements: BuildActionModelRequirements) {

    }

fun Requirements.requiresOs(os: Os) {
    contains("teamcity.agent.jvm.os.name", os.agentRequirement)
}

fun Requirements.requiresArch(os: Os, arch: Arch) {
    if (os == Os.MACOS) {
        contains("teamcity.agent.jvm.os.arch", arch.nameOnMac)
    } else {
        contains("teamcity.agent.jvm.os.arch", arch.nameOnLinuxWindows)
    }
}

fun Requirements.requiresNotEc2Agent() {

                        OperatingSystem.current().isWindows -> requirements = listOf("os=windows", "gbt-dogfooding")
                        OperatingSystem.current().isMacOsX -> requirements = listOf("os=macos", "gbt-dogfooding")
                    }
                } else {
                    requirements = listOf("gbt-dogfooding")
                }

| 7  | `@apiSpec`    | Adds a “API Requirements” heading                                              | A description that applies equally to all valid implementations of the method, including preconditions, postconditions, etc                                                                ...

        'processIsolation'      | true
        'processIsolation'      | false
        'classLoaderIsolation'  | true
        'classLoaderIsolation'  | false
    }

    def "multiple work items with different requirements can be executed in parallel in #isolationMode"() {
        given:
        buildFile << """
            task parallelWorkTask(type: MultipleWorkItemTask) {
                isolationMode = '$isolationMode'