Bad integration of InputImageList in the Application Wrapper
The InputImageParameter has a complete set of getters for any image types. However the InputImageListParameter can only be accessed in FloatVectorImage. This can be an issue when working with specific types that you don't want to cast into Float. Moreover when branching Apps in memory a cast will be automatically done.
An optional 'unsigned int idx' can be added to all the accessors in order to mimic the behavior or the already existing 'GetParameterImageBase(const std::string& key, unsigned int idx = 0);'