What is the main purpose of

FirSignatureEnhancement

, is it to enhance the type of the

JavaField

, `JavaMethod`etc. based on the type in the overridden?

FirSignatureEnhancement

converts declarations from java model into how it should look from the Kotlin side, including • simple transformation of types • mapping builtin types (

java.lang.String

->

kotlin.String

) • mapping collection types • provide correct nullability (flexible types or regular types in presence of nullability annotations) It also paired with

FirJavaClassUseSiteMemberScope

and

JvmMappedScope

, which also perform some other things, like • creating properties based on java getters, if this getter overrides some kotlin property • renames and transforms some java methods (e.g. in collections) to fir kotlin hierarchies (

Map<K, R>.containsKey(Object key) -> Map<K, R>.containsKey(key: K)

• transforms some functions to properties (

List.size() -> List.size

)