Confusion in MQ broker URL and topic name for custom broker

Question

I am going through the documents for creating data pipeline in IoT operation - https://learn.microsoft.com/en-us/azure/iot-operations/process-data/howto-configure-datasource-mq
while going through it I have a few questions,

can I use asset endpoint URL in MQ broker sources URL while creating the data pipeline?

Is there any support for event hub as a source in azure iot ops data pipeline?

document is bit confusing for custom broker and client integration. If I have a custom workload simulating the data what should be the asset endpoint? how can I read data from custom application into data pipeline?