diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87362ac78ab..5daa01e3045 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.11.7
+
+* `Common`:
+  * New abstractions `SimpleMapper` and `SimpleSuspendableMapper`
+* `Repos`:
+  * `Common`:
+    * Add mappers for `CRUDRepo`
+
 ## 0.11.6
 
 * `FSM`:
diff --git a/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/Mapper.kt b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/Mapper.kt
new file mode 100644
index 00000000000..3494ebfff1b
--- /dev/null
+++ b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/Mapper.kt
@@ -0,0 +1,53 @@
+package dev.inmo.micro_utils.common
+
+import kotlin.jvm.JvmName
+
+interface SimpleMapper<T1, T2> {
+    fun convertToT1(from: T2): T1
+    fun convertToT2(from: T1): T2
+}
+
+@JvmName("convertFromT2")
+fun <T1, T2> SimpleMapper<T1, T2>.convert(from: T2) = convertToT1(from)
+@JvmName("convertFromT1")
+fun <T1, T2> SimpleMapper<T1, T2>.convert(from: T1) = convertToT2(from)
+
+class SimpleMapperImpl<T1, T2>(
+    private val t1: (T2) -> T1,
+    private val t2: (T1) -> T2,
+) : SimpleMapper<T1, T2> {
+    override fun convertToT1(from: T2): T1 = t1.invoke(from)
+
+    override fun convertToT2(from: T1): T2 = t2.invoke(from)
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <T1, T2> simpleMapper(
+    noinline t1: (T2) -> T1,
+    noinline t2: (T1) -> T2,
+) = SimpleMapperImpl(t1, t2)
+
+interface SimpleSuspendableMapper<T1, T2> {
+    suspend fun convertToT1(from: T2): T1
+    suspend fun convertToT2(from: T1): T2
+}
+
+@JvmName("convertFromT2")
+suspend fun <T1, T2> SimpleSuspendableMapper<T1, T2>.convert(from: T2) = convertToT1(from)
+@JvmName("convertFromT1")
+suspend fun <T1, T2> SimpleSuspendableMapper<T1, T2>.convert(from: T1) = convertToT2(from)
+
+class SimpleSuspendableMapperImpl<T1, T2>(
+    private val t1: suspend (T2) -> T1,
+    private val t2: suspend (T1) -> T2,
+) : SimpleSuspendableMapper<T1, T2> {
+    override suspend fun convertToT1(from: T2): T1 = t1.invoke(from)
+
+    override suspend fun convertToT2(from: T1): T2 = t2.invoke(from)
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <T1, T2> simpleSuspendableMapper(
+    noinline t1: suspend (T2) -> T1,
+    noinline t2: suspend (T1) -> T2,
+) = SimpleSuspendableMapperImpl(t1, t2)
diff --git a/gradle.properties b/gradle.properties
index 835cff3d3c3..d4794a30290 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,5 +14,5 @@ crypto_js_version=4.1.1
 # Project data
 
 group=dev.inmo
-version=0.11.6
-android_code_version=130
+version=0.11.7
+android_code_version=131
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
index 313c7970f60..3fdf345e073 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
@@ -1,22 +1,51 @@
 package dev.inmo.micro_utils.repos
 
+import dev.inmo.micro_utils.common.*
+
 @Suppress("UNCHECKED_CAST")
 interface MapperRepo<FromKey, FromValue, ToKey, ToValue> {
+    val keyMapper: SimpleSuspendableMapper<FromKey, ToKey>
+        get() = simpleSuspendableMapper(
+            { it.toInnerKey() },
+            { it.toOutKey() }
+        )
+    val valueMapper: SimpleSuspendableMapper<FromValue, ToValue>
+        get() = simpleSuspendableMapper(
+            { it.toInnerValue() },
+            { it.toOutValue() }
+        )
+
     suspend fun FromKey.toOutKey() = this as ToKey
     suspend fun FromValue.toOutValue() = this as ToValue
 
     suspend fun ToKey.toInnerKey() = this as FromKey
     suspend fun ToValue.toInnerValue() = this as FromValue
+
+    companion object
 }
 
-inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> mapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
-) = object : MapperRepo<FromKey, FromValue, ToKey, ToValue> {
+class SimpleMapperRepo<FromKey, FromValue, ToKey, ToValue>(
+    private val keyFromToTo: suspend FromKey.() -> ToKey,
+    private val valueFromToTo: suspend FromValue.() -> ToValue,
+    private val keyToToFrom: suspend ToKey.() -> FromKey,
+    private val valueToToFrom: suspend ToValue.() -> FromValue
+) : MapperRepo<FromKey, FromValue, ToKey, ToValue> {
     override suspend fun FromKey.toOutKey(): ToKey = keyFromToTo()
     override suspend fun FromValue.toOutValue(): ToValue = valueFromToTo()
     override suspend fun ToKey.toInnerKey(): FromKey = keyToToFrom()
     override suspend fun ToValue.toInnerValue(): FromValue = valueToToFrom()
 }
+
+operator fun <FromKey, FromValue, ToKey, ToValue> MapperRepo.Companion.invoke(
+    keyFromToTo: suspend FromKey.() -> ToKey,
+    valueFromToTo: suspend FromValue.() -> ToValue,
+    keyToToFrom: suspend ToKey.() -> FromKey,
+    valueToToFrom: suspend ToValue.() -> FromValue
+) = SimpleMapperRepo(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
+
+inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> mapper(
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+) = MapperRepo(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/CRUDMappers.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/CRUDMappers.kt
new file mode 100644
index 00000000000..97894431d7b
--- /dev/null
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/CRUDMappers.kt
@@ -0,0 +1,130 @@
+package dev.inmo.micro_utils.repos.mappers
+
+import dev.inmo.micro_utils.common.*
+import dev.inmo.micro_utils.pagination.*
+import dev.inmo.micro_utils.repos.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+
+open class MapperReadCRUDRepo<FromId, FromRegistered, ToId, ToRegistered>(
+    private val to: ReadCRUDRepo<ToRegistered, ToId>,
+    mapper: MapperRepo<FromId, FromRegistered, ToId, ToRegistered>
+) : ReadCRUDRepo<FromRegistered, FromId>, MapperRepo<FromId, FromRegistered, ToId, ToRegistered> by mapper {
+    override suspend fun getByPagination(
+        pagination: Pagination
+    ): PaginationResult<FromRegistered> = to.getByPagination(
+        pagination
+    ).let {
+        it.changeResultsUnchecked(
+            it.results.map { it.toInnerValue() }
+        )
+    }
+
+    override suspend fun count(): Long = to.count()
+
+    override suspend fun contains(id: FromId): Boolean = to.contains(id.toOutKey())
+
+    override suspend fun getById(id: FromId): FromRegistered? = to.getById(
+        id.toOutKey()
+    ) ?.toInnerValue()
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> ReadCRUDRepo<ToValue, ToKey>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): ReadCRUDRepo<FromValue, FromKey> = MapperReadCRUDRepo(this, mapper)
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> ReadCRUDRepo<ToValue, ToKey>.withMapper(
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+): ReadCRUDRepo<FromValue, FromKey> = withMapper(
+    mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
+)
+
+open class MapperWriteCRUDRepo<FromId, FromRegistered, FromInput, ToId, ToRegistered, ToInput>(
+    private val to: WriteCRUDRepo<ToRegistered, ToId, ToInput>,
+    mapper: MapperRepo<FromId, FromRegistered, ToId, ToRegistered>,
+    inputMapper: SimpleSuspendableMapper<FromInput, ToInput>
+) : WriteCRUDRepo<FromRegistered, FromId, FromInput>,
+    MapperRepo<FromId, FromRegistered, ToId, ToRegistered> by mapper,
+    SimpleSuspendableMapper<FromInput, ToInput> by inputMapper {
+    override val newObjectsFlow: Flow<FromRegistered> = to.newObjectsFlow.map { it.toInnerValue() }
+    override val updatedObjectsFlow: Flow<FromRegistered> = to.updatedObjectsFlow.map { it.toInnerValue() }
+    override val deletedObjectsIdsFlow: Flow<FromId> = to.deletedObjectsIdsFlow.map { it.toInnerKey() }
+
+    override suspend fun deleteById(ids: List<FromId>) = to.deleteById(ids.map { it.toOutKey() })
+
+    override suspend fun update(
+        values: List<UpdatedValuePair<FromId, FromInput>>
+    ): List<FromRegistered> = to.update(
+        values.map {
+            it.first.toOutKey() to convert(it.second)
+        }
+    ).map { it.toInnerValue() }
+
+    override suspend fun update(
+        id: FromId,
+        value: FromInput
+    ): FromRegistered? = to.update(id.toOutKey(), convert(value)) ?.toInnerValue()
+
+    override suspend fun create(values: List<FromInput>): List<FromRegistered> = to.create(
+        values.map {
+            convert(it)
+        }
+    ).map {
+        it.toInnerValue()
+    }
+
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, FromInput, ToKey, ToValue, ToInput> WriteCRUDRepo<ToValue, ToKey, ToInput>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>,
+    simpleSuspendableMapper: SimpleSuspendableMapper<FromInput, ToInput>
+): WriteCRUDRepo<FromValue, FromKey, FromInput> = MapperWriteCRUDRepo(this, mapper, simpleSuspendableMapper)
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <reified FromKey, reified FromValue, reified FromInput, reified ToKey, reified ToValue, reified ToInput> WriteCRUDRepo<ToValue, ToKey, ToInput>.withMapper(
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline inputFromToTo: suspend FromInput.() -> ToInput = { this as ToInput },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline inputToToFrom: suspend ToInput.() -> FromInput = { this as FromInput },
+): WriteCRUDRepo<FromValue, FromKey, FromInput> = withMapper(
+    mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom),
+    simpleSuspendableMapper({ inputToToFrom(it) }, { inputFromToTo(it) })
+)
+
+@Suppress("DELEGATED_MEMBER_HIDES_SUPERTYPE_OVERRIDE")
+open class MapperCRUDRepo<FromId, FromRegistered, FromInput, ToId, ToRegistered, ToInput>(
+    private val to: CRUDRepo<ToRegistered, ToId, ToInput>,
+    private val mapper: MapperRepo<FromId, FromRegistered, ToId, ToRegistered>,
+    private val inputMapper: SimpleSuspendableMapper<FromInput, ToInput>
+) : CRUDRepo<FromRegistered, FromId, FromInput>,
+    MapperRepo<FromId, FromRegistered, ToId, ToRegistered> by mapper,
+    ReadCRUDRepo<FromRegistered, FromId> by MapperReadCRUDRepo(to, mapper),
+    WriteCRUDRepo<FromRegistered, FromId, FromInput> by MapperWriteCRUDRepo(to, mapper, inputMapper)
+
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, FromInput, ToKey, ToValue, ToInput> CRUDRepo<ToValue, ToKey, ToInput>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>,
+    simpleSuspendableMapper: SimpleSuspendableMapper<FromInput, ToInput>
+): CRUDRepo<FromValue, FromKey, FromInput> = MapperCRUDRepo(this, mapper, simpleSuspendableMapper)
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <reified FromKey, reified FromValue, reified FromInput, reified ToKey, reified ToValue, reified ToInput> CRUDRepo<ToValue, ToKey, ToInput>.withMapper(
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline inputFromToTo: suspend FromInput.() -> ToInput = { this as ToInput },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline inputToToFrom: suspend ToInput.() -> FromInput = { this as FromInput },
+): CRUDRepo<FromValue, FromKey, FromInput> = withMapper(
+    mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom),
+    simpleSuspendableMapper({ inputToToFrom(it) }, { inputFromToTo(it) })
+)
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
index 23955920fe8..4df2b614f6e 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
@@ -77,10 +77,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> ReadKeyValueRepo<ToKey, ToValue>
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> ReadKeyValueRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): ReadKeyValueRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )
@@ -122,10 +122,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> WriteKeyValueRepo<ToKey, ToValue
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> WriteKeyValueRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): WriteKeyValueRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )
@@ -148,10 +148,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> KeyValueRepo<ToKey, ToValue>.wit
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> KeyValueRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): KeyValueRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
index 5e5d5b44d5f..f74b81d9149 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
@@ -75,10 +75,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> ReadKeyValuesRepo<ToKey, ToValue
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> ReadKeyValuesRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): ReadKeyValuesRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )
@@ -128,10 +128,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> WriteKeyValuesRepo<ToKey, ToValu
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> WriteKeyValuesRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): WriteKeyValuesRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )
@@ -154,10 +154,10 @@ inline fun <FromKey, FromValue, ToKey, ToValue> KeyValuesRepo<ToKey, ToValue>.wi
 
 @Suppress("NOTHING_TO_INLINE")
 inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> KeyValuesRepo<ToKey, ToValue>.withMapper(
-    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
-    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
-    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
-    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+    noinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    noinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    noinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    noinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
 ): KeyValuesRepo<FromKey, FromValue> = withMapper(
     mapper(keyFromToTo, valueFromToTo, keyToToFrom, valueToToFrom)
 )