std::string get_parameter_docs(uint32_t which) const;
int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
uint32_t nth_parameter (uint32_t port, bool& ok) const;
+ bool get_layout (uint32_t which, UILayoutHint&) const;
IOPortDescription describe_io_port (DataType dt, bool input, uint32_t id) const;