117843fe95
The macro used to return NULL if input was NULL or had the wrong type. Now it asserts that input is nonnull and it has the expected type. There are a few places where a missing or mismatched type was OK, but in a majority of places, we would do both of the asserts. In various places we'd only do one, but that was by ommission/mistake. So moving the asserts into the macro allows us to save some lines.
System and Service Manager
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