## Description
When creating Abstract Content, we often need to fill function call inputs with the page arguments:
* Z825K2: Current language
* Z825K3: Today's date
* Z825K1: Wikidata item reference
To make the editors journey a bit less tedious, we can prefill these argument references when we create instances for these types.
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**Questions**
> Do we only prefill language and date, or do we also prefill Wikidata item and item reference?
While date and language might always generally be replaced with the page language and date argument references, Wikidata items are different. For creating an abstract function call, we might use the page item, but we will also surely use other Wikidata items that we search and select, so maybe pre-fill these might make the experience worse, not better.
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**Desired behavior/Acceptance criteria**
In the context of an Abstract Fragment:
* [ ] When a function call is created (e.g. user selects function in the lookup), and the inputs are created and populated with the corresponding blank objects, fill up automatically depending on input type:
* [ ] Language inputs: set to **Z18( Z825K2 )**
* [ ] Gregorian calendar date: set to **Z18( Z825K3 )**
* [ ] (not sure) Wikidata item: set to** Z6821( Z18( Z825K1 ) )**
* [ ] (not sure) Wikidata item reference: set to **Z18( Z825K1 )**
NOTE: This must happen in abstract content ('abstractwiki' keyPath) but never with normal default component behavior.
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## Completion checklist
* [ ] Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Front-end_Task/Bug_Completion_Checklist