Sample on how to integrate a custom JSCA file in Titanium, in order to add custom Code Assist. The file can be placed anywhere in the project directory, and the Code Assist will be automatically recognize the new functions. More details on the file format here: http://docs.appcelerator.com/titanium/latest/#!/guide/JSCA_1.0_Specification

api.jsca

{
	"types": [{
		"name": "HelloWorld",
		"examples": [],
		"functions": [{
			"name": "say",
			"parameters": [{
				"name": "message",
				"usage": "optional",
				"type": "String",
				"description": "The name to say Hello to - by default World!"
			}],
			"returnTypes": [{
				"type": "Boolean", 
				"description": "true if we said Hello to the World"
			}],
			"userAgents": [{
				"platform": "android"
			}, {
				"platform": "iphone"
			}, {
				"platform": "ipad"
			}], 
			"isConstructor": false, 
			"isClassProperty": false, 
			"isInternal": false, 
			"isMethod": true, 
			"isInstanceProperty": true, 
			"description": "Write Hello World - as simple as that"
		}],
		"events": [],
		"userAgents": [{
			"platform": "android"
		}, {
			"platform": "iphone"
		}, {
			"platform": "ipad"
		}],
		"deprecated": false,
		"properties": []
	}],
	"aliases": []
}