Uniform way of command scheduling

[JB-Wolf]

Problem

Potentially, different devices react differently in some cases.

• Some pumps allow for changing the flowrate when they are running, some might not
• some pumps might throw error if one tries to start them while they are already running.

The impact of this is significant:

• Errors might go undetected
• devices are not exchangable

suggested solution

methods of abstract devices should only perform atomic operations

• no bundling for easier use
• throw error if state change is attempted while in dynamic state, e.g. change flowrate, start when running

[JB-Wolf]

The abstract valve should "enforce" what a command looks like and implement throwing errors if this scheme is not followed