core Print/Stream API is old. availableForWrite is missing

[JAndrassy]

this should be applied
arduino/ArduinoCore-API#104

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[STALE_SET] This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs. Thank you for your contributions.

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[STALE_CLR] This issue has been removed from the stale queue. Please ensure activity to keep it openin the future.

[drmpf]

Yes a duplicate, was marked as stale.
Merge PULL request #4664 to fix this

[JAndrassy]

was marked as stale.

only 2 hours at 11/11