Is your feature or improvement request related to a problem? Please describe.
We transfer calls to external AI bots and bots, return a call to us with a REFER, and add some headers with bot results, but now it's impossible to read these headers.
Describe the solution you'd like
It will be helpful and a great feature, we can use the PJSIP_HEADER function for reading headers after a REFER in the same way we use when we receive an INVITE.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
Add any other context or screenshots about the feature request here.