@Override
    public String toString() {
        return ObservableResponseConverterFunctionProvider.class.getSimpleName();
    }
Returns {@code true} if the specified {@link Class} can be handled by the
{@link ObservableResponseConverterFunction}.
rxjava2/src/main/java/com/linecorp/armeria/internal/server/rxjava2/ObservableResponseConverterFunctionProvider.java