I am trying to use the Invoice Ninja package for flutter. However, I can't seem to figure out what the "KEY" is? There is no mention in the docs or settings of any "KEY". The only mention is API Token. I have a v5 self hosted instance of Invoice Ninja.
invoiceninja: ^0.0.8
InvoiceNinja.configure(
'KEY', // Set your company key or use 'KEY' to test
url: 'https://example.com/payments/public', // Set your selfhost app URL
debugEnabled: true,
);