It seems to me that it is not possible to specify operation headers in generic operation executions. This is required if a user choose to use low-level operation and need to specify roll-out plans, allow-resource-service-restart or other flags.

Something like this should be possible:

[standalone@localhost:9999 /] /subsystem=datasources/data-source=TestDS:disable(headers=

{"allow-resource-service-restart" => true})
Operation 'disable' does not expect any property.
[standalone@localhost:9999 /] /subsystem=datasources/data-source=TestDS:disable --headers={"allow-resource-service-restart" => true}

)
'disable --headers=' is not a valid operation name.