* Refactor Integration sensor.
* Use local simple function to verify the State is numeric.
* Merge two methods to one.
* Method renaming: _handle_state_change
* Move async_write_ha_state to the caller.
* Add comment on why attr_icon is set to None
* Remove possible None type of State in validation methods.
* Use a dict to map method name to method class.
* Explain derived unit after integration.
* Renaming to _multiply_unit_with_time and elaborate in docstring.
* Set integral unit_of_measurement explicitly to None if source unit_of_measurement is None
* One function for unit of measurement related steps.
* Improve docstring of _multiply_unit_with_time
Co-authored-by: Erik Montnemery <erik@montnemery.com>
* Apply f-string suggestions from code review
Co-authored-by: Erik Montnemery <erik@montnemery.com>
* Be more clear in comment about removing the sensors icon default.
* Apply suggestions from code review
Co-authored-by: Diogo Gomes <diogogomes@gmail.com>
* Update homeassistant/components/integration/sensor.py
* Update homeassistant/components/integration/sensor.py
* Update homeassistant/components/integration/sensor.py
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Co-authored-by: Erik Montnemery <erik@montnemery.com>
Co-authored-by: Diogo Gomes <diogogomes@gmail.com>
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