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			837 B
		
	
	
	
	
	
	
	
title
| title | 
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| Sources expression property mappings | 
The property mapping should return a value that is expected by the source. Returning None is always accepted and would simply skip the mapping for which None was returned.
Variables
- Arbitrary arguments given by the source (this is documented by the source).
 properties: A Python dictionary containing the result of the previously run property mappings, plus the initial data computed by the source.request: The current request. This may beNoneif there is no contextual request. See (Django documentation)
import Objects from "../../expressions/_objects.md";
Available Functions
import Functions from "../../expressions/_functions.md";