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When typing the name of a built-in function like Integrate, the button (enter image description here) appears next to that name in the autocomplete:

enter image description here

But in my self-defined application´╝îit doesn't works

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Also, the button is gray when I complete input:

enter image description here

the button should links to the page:"QuantumInformation/ref/GeneralizedGellMannMatrix"

enter image description here

(My enviroment is Windows 10, Mathematica 11.0, Wolfram Workbench 10.1.757)

Thanks.

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