如何从buildbot中的强制调度程序中获取和赋值

from buildbot.plugins import steps

# 定义一个强制调度程序
force_scheduler = schedulers.ForceScheduler(
    name="force-scheduler",
    builderNames=["my-builder"],
    properties=[
        util.StringParameter(name="my-property", label="My Property", size=20)
    ]
)

# 定义一个构建步骤
build_step = steps.ShellCommand(
    command=["echo", "Hello, world!"],
    description="Print Hello, world!",
    descriptionDone="Printed Hello, world!"
)

# 在构建步骤中获取和赋值属性
def print_property(build):
    my_property = build.getProperty("my-property")
    print("My Property:", my_property)

    build.setProperty("new-property", "new-value")

build_step.addStep(steps.BuildStep(
    name="print-property",
    description="Print Property",
    descriptionDone="Printed Property",
    doStepIf=print_property
))

# 将构建步骤添加到构建器中
builder = util.BuilderConfig(
    name="my-builder",
    steps=[build_step]
)

# 将强制调度程序和构建器添加到工厂中
factory = util.BuildFactory()
factory.addStep(force_scheduler)
factory.addStep(builder)