# `mix monty_cad.gen.policy`
[🔗](https://github.com/d-led/ex.monty.cad/blob/main/lib/mix/tasks/monty_cad.gen.policy.ex#L1)

Writes a motor policy into the current project.

    mix monty_cad.gen.policy follow_chamfers

Two files: `lib/<app>/plugins/follow_chamfers.ex` — the callbacks
`Monty.Frameworks.Models.MotorPolicies.MotorPolicy` requires, and the
`describe/0` a cluster asks for — and a test that asserts both. `call/6` raises
until the decision is written, on purpose: a generated body that looks like an
answer is a decision nobody made.

The policy is `:owner_only`, because a policy over a CAD part reads a B-rep
handle and that cannot leave the node that opened it. A policy over something
else changes the description and says why.

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*Consult [api-reference.md](api-reference.md) for complete listing*