I don't know that anything special was done in the D7 version to support this, but it had a series of tests to verify functionality at least and the tests could be converted to the new API.

http://cgit.drupalcode.org/field_collection/commit/?id=eb59a86

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jmuzz created an issue. See original summary.

jmuzz’s picture

jmuzz CreditAttribution: jmuzz commented
Version: 8.x-1.x-dev » 8.x-3.x-dev

Development is moving to 8.x-3.x.

ram4nd’s picture

ram4nd CreditAttribution: ram4nd as a volunteer commented
Status: Active » Closed (won't fix)