Expression sets consist of a series of steps connected in a logical flow built from
variables, constants, conditions, calculations, lookups, and aggregations.
Expression Set Metadata API Types
Metadata API enables you to access some types and feature settings that you can customize in the user interface.
Expression Set Tooling API Objects
Tooling API exposes metadata used in developer tooling that you can access through REST or SOAP. Tooling API’s SOQL capabilities for many metadata types allow you to retrieve smaller pieces of metadata.
