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+Effect handlers for open-ended pipes can be registered to allow for custom behavior when such a pipe is spilling fluid.
+- Implement `OpenEndedPipe$IEffectHandler`
+  - `canApplyEffects` checks if effects should be applied for the given `FluidStack`
+  - `applyEffects` runs when effects should be applied
+  - Both methods receive the `OpenEndedPipe` instance as context to allow getting the world, position, etc.
+- Register an instance with `OpenEndedPipe#registerEffectHandler`
+
+An example can be found [here](https://github.com/Creators-of-Create/Create/blob/mc1.16/dev/src/main/java/com/simibubi/create/content/contraptions/fluids/OpenEndedPipe.java#L371). (Create's own handler for milk)
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