One branch as the call runs it: the handler with its screen erased (the screen's id selected it, so the handle is the one the handler's type names) and its error kept — the union of every handler's errors, E.
E
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One branch as the call runs it: the handler with its screen erased (the screen's id selected it, so the handle is the one the handler's type names) and its error kept — the union of every handler's errors,
E.