When I open purchase_invoice.json file inside erpnext/accounts/doctype/purchase_invoice/purchase_invoice.json
I saw the “links” is empty. But there are lots of connections avialable in Purchase Invoice Form. Where did they came from? Where are they defined???
Connections
purchase_invoice.json
{
...
"icon": "fa fa-file-text",
"idx": 204,
"is_submittable": 1,
"links": [],
"modified": "2021-06-09 12:30:25.632109",
"modified_by": "Administrator",
"module": "Accounts",
"name": "Purchase Invoice",
"name_case": "Title Case",
"owner": "Administrator",
"permissions": [
...
}