Below you can find the extended AsyncAPI v2.0.0 Metamodel Derived from the AsyncAPI Xtext Grammar with Service Level Agreement (SLA) primitives.
See the AsyncAPI/JSON Xtext Grammar (including the SLA extensions) in the file /plugins/io.github.abelgomez.asyncapi/src/io/github/abelgomez/asyncapi/AsyncApi.xtext.
Rules starting with x- prefix are those representing the extensions to describe SLAs. Sections without the x-prefix represent a subset of the AsyncAPI specification.