multibranchPipelineJob doesn't support specifying an agent/node label like freestyle job does. (As shown in the job-dsl api-viewer on my instance and in the official docs.) This would be very useful to enforce this critical detail at the "job root" instead of requiring individual branch Jenkinsfiles to all specify it correctly.
Does anyone know of a workaround for this? Perhaps something lower in the property tree for multibranchPipelineJob allows specifying a label that will be used by all branch jobs? Where would I find such property and how would I set it?