Currently, an analyzer can register an operation block action and get hold of all operation blocks for each symbol that has an associated executable code block. This issue tracks exposing a convenience API for non-analyzer clients to get operations blocks for a given symbol.

See second bullet point in Essentials section in the comment from @bkoelman here: #27208 (comment)

An API to get operation block(s) from an IMethodSymbol. My current solution via syntax is tedious and probably incomplete. A reliable API that works on symbols for methods, fields and other places that may contain a code block (and which works for both blocks and expression bodies) would be very welcome.