Bulk generates associations. Posts involved in associations are created automatically.
[--count-first=<number>] : How many items of the first part involved in the relationship to generate. Default: 1
[--count-second=<number>] : How many items of the second part involved in the relationship to generate for each one of the first part. Default: 10
[--post=<number>] : The ID of the first post of the association. If used, count-first parameter should be ommitted. If ommitted, a new post will be created.
[--relationship=<string>] : The relationship slug.
wp types association generate --count-first=2 --count-second=20 --relationship=relationship-slug wp types association generate --post=12 --count-second=40 --relationship=relationship-slug