// Package ldmodel contains the LaunchDarkly Go SDK feature flag data model.
//
// These types contain the subset of feature flag and user segment data that is sent by LaunchDarkly to
// the SDK.
//
// There is a defined JSON schema for these types that is used in communication between the SDK and
// LaunchDarkly services, which is also the JSON encoding used for storing flags/segments in a persistent
// data store. The JSON schema does not correspond exactly to the exported field structure of these types;
// the ldmodel package provides functions for explicitly converting the types to and from JSON. See
// DataModelSerialization for details.
//
// Normal use of the Go SDK does not require referencing this package directly. It is used internally
// by the SDK, but is published and versioned separately so it can be used in other LaunchDarkly
// components without making the SDK versioning dependent on these internal APIs.
//
// The bulk of the flag evaluation logic is in the main go-server-sdk-evaluation package, rather than in
// these data model types. However, in order to allow certain optimizations that could not be done from
// outside the package without exposing implementation details in the API, some of the logic (such as
// target and clause matching) is implemented here.
package ldmodel