Creates a new External Method and adds it to the current Folder.
ID
Title
Function name
Python module file
Extensions
directory, or in a Extensions
directory in a product directory. Product directories are
located in lib/python/Products
. If the Python
module is in a product directory this should be indicated
in the name of the module which should be the name of the
product followed by a dot followed by the name of the
Python module file.