[ Version ( since = "2.1.6" ) ]
public bool setup () throws Error
Reads the current value, converting to the display value as required.
NOTE: A subclass should handle the `->read_value` vfunc and actually read the raw value from the firmware.
If add_possible_value_full was used then the raw value is automatically mapped to the display value before being set as the current version.
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true for success |