_package_command()

Instrument._package_command(

channel: str,

data: float | bool | str,

timestamp: int,

**kwargs,

) → Command

Build a single-channel Command namespaced under this instrument.

The published channel key is {self.name}.{channel}. The caller writes the full descriptor including any .cmd suffix, so the literal published name appears at the call site (e.g. f"ch{channel}.voltage.cmd").