Invoke the member function pointer held by this wrapper on the specified object reference to a non-modifiable instance of the parameterized INSTANCE type, with the specified argument arg1, and return the result of this invocation, or void if this member function pointer does not return a result.
Declared in <bdlf_memfn.h>
template<class INSTANCE>
ResultType
operator()(
INSTANCE const& object,
ARG1 arg1) const;