Imports a previously exported function into a VLX namespace
(vl-doc-import application ['function...])
This function can be used in a separate-namespace VLX to import a function that was previously exported from another VLX loaded from the same document.
The vl-doc-import function should be used only at the top level in a file, and never inside other forms (for example, not within a defun).
Import function ldataget from the ldatatest application:
(vl-doc-import "ldatatest" 'ldataget)
nil