Question: WordPress/Timber/Twig theme newbie here. I am wanting to bring the theme custom header image into a Timber-based Twig theme. I know you need to tie into the theme customizer API and have this code `{{ function('get_theme_mod', 'name') }}`, but I do not know how to adapt it to work with custom header images.

Any suggestions or tips?

Answer: 
you should take your request and paste it on google search (the webpage search top bar). Remove any questionmark in the end, and you will see it will work, and will re-format the request. Copy the request from Google and try it on Postman now; hopefully it will work...
It worked for me.
There is no such error in HERE API and documentations and this is written in every API documentation to replace your key holder. However we can ask the team to update the document to remove the `{}`. so that it will not create any further confusion.

<https://developer.here.com/documentation/routing/dev_guide/common/credentials.html>