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This function is also called in URIViewRenderer.
The delay of the requests makes that the first call does not succeed
before the second one is launched therefore, the fetch is done
twice instead of once.

On initialization, selectedView is always null. The switch
in URIDescription always lead to URIDefaultView and started
retrieving the triples.

If the SearchBar component is renders, at the begining the class list is rendered.
If a search is launched then the class list is hidden to render the search result.
If the seach is launched with an empty searchInput then the class list is render again.

btw change placeholder

It could be improve by using triple interface from rdflib.js and not an ad hoc one.
The rdflib.js triple interface define that the object could be an URI or a Literal, and all the possible attribute.