BEFORE MODIFICATION:
public final [ResolvedTo(BODY_RESOLVE)] fun x(): R|kotlin/Unit|
    [R|Contract description]
     <
    >
 {
     {
        R|kotlin/contracts/contract|(<L> = [ResolvedTo(BODY_RESOLVE)] [MatchingParameterFunctionTypeKey=@ExtensionFunctionType kotlin/Function1<kotlin/contracts/ContractBuilder, kotlin/Unit>] contract@fun R|kotlin/contracts/ContractBuilder|.<anonymous>(): R|kotlin/Unit| <inline=Inline, kind=UNKNOWN>  {
            <Unresolved name: req>#
        }
        )
    }

    [ResolvedTo(BODY_RESOLVE)] lval a: R|kotlin/Int| = R|/doSmth|(String(str))
}

AFTER MODIFICATION:
public final [ResolvedTo(EXPECT_ACTUAL_MATCHING)] fun x(): R|kotlin/Unit| { LAZY_BLOCK }