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We've long used a switch statement on the grab operation to determine where events should go. The issue with MetaGrabOp is that it's a mixture of a few different things, including event routing, state management, and the behavior to choose during operations. This leads to poorly defined event routing and hard-to-follow logic, since it's sometimes unclear what should point where, and our utility methods for determining grab operations apart can be poorly named. To fix this, establish the concept of a "event route", which describes where events should be routed to.