Little fixes

Author: EgorkaKulikov

utbot-framework/src/main/kotlin/org/utbot/framework/codegen/model/constructor/util/CgStatementConstructor.kt

@@ -118,7 +118,7 @@ interface CgStatementConstructor {
     fun CgTryCatch.catch(exception: ClassId, init: (CgVariable) -> Unit): CgTryCatch
     fun CgTryCatch.finally(init: () -> Unit): CgTryCatch
 
-    fun CgExpression.isInstance(typeExpr: CgExpression): CgIsInstance
+    fun CgExpression.isInstance(value: CgExpression): CgIsInstance
 
     fun innerBlock(init: () -> Unit): CgInnerBlock
 
@@ -306,12 +306,13 @@ internal class CgStatementConstructorImpl(context: CgContext) :
         return this.copy(finally = finallyBlock)
     }
 
-    override fun CgExpression.isInstance(typeExpr: CgExpression): CgIsInstance {
+    override fun CgExpression.isInstance(value: CgExpression): CgIsInstance {
         require(this.type == classClassId) {
             "isInstance method can be called on object with type $classClassId only, but actual type is ${this.type}"
         }
 
-        return CgIsInstance(this, typeExpr)
+        //TODO: we should better process it as this[isInstanceMethodId](value) as it is a call
+        return CgIsInstance(this, value)
     }
 
     override fun innerBlock(init: () -> Unit): CgInnerBlock =