get_function_list — Get a list of functions supported by the web service.
This function returns the list of functions supported by the web service. It may also return documentation for each parameter.
An XCEDE 2 Web Services list with the following items:
Each supported function will be returned in a separate "function" item, with the following fields:
name of the function
HTML documentation of the function
An optional message with diagnostic info with regards to the return value or the processing of this request.