A function returning an object depending on the three arguments. Example: Method \fImethod Collection::Collect\fP calls \fBObjPtrFun\fP with every object of the collection and collects the returned objects in a second collection.
.SH ARGUMENTS
.TP
\fBObjPtr firstObject
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First Object. Semantics depend on implementation.
.TP
\fBObjPtr secondObject
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Second Object. Semantics depend on implementation.
.TP
\fBvoid* arg
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Some arbitrary argument. Semantics depend on implementation.