Returns information about an ActiveMQ user.
See https://www.paws-r-sdk.com/docs/mq_describe_user/ for full documentation.
mq_describe_user(BrokerId, Username)
[required] The unique ID that Amazon MQ generates for the broker.
[required] The username of the ActiveMQ user. This value can contain only alphanumeric characters, dashes, periods, underscores, and tildes (- . _ ~). This value must be 2-100 characters long.