Partial host configuration override

[CaledoniaProject]

I'm trying to override the nginx configuration for a specific site hosted under APISIX, I found this document but it's for global configurations, https://apisix.apache.org/docs/apisix/customize-nginx-configuration/

Suppose I have www.example.com and I want to have a www.example.com.conf to override the server block, is that possible? In other words, does openresty expose all possible configurations to Lua interface?

[CaledoniaProject]

Anyone?