diff --git a/src/main/scala/hb/dhbw/AST.scala b/src/main/scala/hb/dhbw/AST.scala
index 08f35c8..36d2c72 100644
--- a/src/main/scala/hb/dhbw/AST.scala
+++ b/src/main/scala/hb/dhbw/AST.scala
@@ -1,7 +1,7 @@
 package hb.dhbw
 
-final case class Class(name: String, params: List[(Type,Type)], superType: RefType, fields: List[(Type,String)], methods: List[Method])
-final case class Method(retType: Type, name: String, params: List[(Type, String)], retExpr: Expr)
+final case class Class(name: String, genericParams: List[(Type,Type)], superType: RefType, fields: List[(Type,String)], methods: List[Method])
+final case class Method(genericParams: List[Constraint], retType: Type, name: String, params: List[(Type, String)], retExpr: Expr)
 
 sealed trait Type
 final case class RefType(name: String, params: List[Type]) extends Type
@@ -25,7 +25,7 @@ object ASTBuilder {
       val genericNames = c.params.map(_._1).map(_.name).toSet
       Class(c.name, c.params.map(p => (nTypeToType(p._1, genericNames), nTypeToType(p._2, genericNames))),
         nTypeToType(c.superType, genericNames).asInstanceOf[RefType],
-        c.fields.map(f => (nTypeToType(f._1, genericNames),f._2)), c.methods.map(m => Method(freshTPV(), m.name, m.params.map(p => (freshTPV(), p)), m.retExpr)))
+        c.fields.map(f => (nTypeToType(f._1, genericNames),f._2)), c.methods.map(m => Method(List(), freshTPV(), m.name, m.params.map(p => (freshTPV(), p)), m.retExpr)))
     })
 
     private def freshTPV() = {
diff --git a/src/main/scala/hb/dhbw/FJTypeinference.scala b/src/main/scala/hb/dhbw/FJTypeinference.scala
index 39ef602..1220667 100644
--- a/src/main/scala/hb/dhbw/FJTypeinference.scala
+++ b/src/main/scala/hb/dhbw/FJTypeinference.scala
@@ -27,7 +27,7 @@ object FJTypeinference {
 
   private def generateFC(ast: List[Class]): FiniteClosure = new FiniteClosure(
     ast.map(c => (cToUnifyType(c), convertType(c.superType).asInstanceOf[UnifyRefType])).toSet)
-  private def cToUnifyType(c: Class) = UnifyRefType(c.name, c.params.map(it => convertType(it._1)))
+  private def cToUnifyType(c: Class) = UnifyRefType(c.name, c.genericParams.map(it => convertType(it._1)))
 
   def typeinference(str: String): Either[String, Set[Set[UnifyConstraint]]] = {
     val ast = Parser.parse(str).map(ASTBuilder.fromParseTree(_))
diff --git a/src/main/scala/hb/dhbw/InsertTypes.scala b/src/main/scala/hb/dhbw/InsertTypes.scala
index 3e87a57..c2682e1 100644
--- a/src/main/scala/hb/dhbw/InsertTypes.scala
+++ b/src/main/scala/hb/dhbw/InsertTypes.scala
@@ -2,4 +2,22 @@ package hb.dhbw
 
 class InsertTypes {
 
+  def insert(unifyResult: Set[Set[UnifyConstraint]], into: Class): Class = {
+    val constraints = unifyResult.map(_.map(replaceTVWithGeneric(_)))
+    val newMethods = into.methods.flatMap(m => constraints.map(cons => insert(cons, m)))
+    Class(into.name, into.genericParams, into.superType, into.fields, newMethods)
+  }
+
+  private def insert(constraints: Set[Constraint], into: Method): Method = {
+    Method(into.genericParams ++ constraints, into.retType, into.name, into.params, into.retExpr)
+  }
+  private def replaceTVWithGeneric(in: UnifyConstraint): Constraint= in match {
+    case UnifyLessDot(a,b) => LessDot(replaceTVWithGeneric(a), replaceTVWithGeneric(b))
+    case UnifyEqualsDot(a, b) => EqualsDot(replaceTVWithGeneric(a), replaceTVWithGeneric(b))
+  }
+  private def replaceTVWithGeneric(in: UnifyType) : Type = in match {
+    case UnifyRefType(name, params) => RefType(name, params.map(replaceTVWithGeneric(_)))
+    case UnifyTV(name) => GenericType(name)
+  }
+
 }
diff --git a/src/main/scala/hb/dhbw/TYPE.scala b/src/main/scala/hb/dhbw/TYPE.scala
index 3cf23ef..aa437c7 100644
--- a/src/main/scala/hb/dhbw/TYPE.scala
+++ b/src/main/scala/hb/dhbw/TYPE.scala
@@ -67,7 +67,7 @@ object TYPE {
         val (rty, cons) = TYPEExpr(e, localVars, ast)
         val es = params.map(ex => TYPEExpr(ex, localVars, ast))
         val methods = findMethods(name, es.size, ast)
-        val consM = methods.map(m => AndConstraint(
+        val consM = methods.map(m => AndConstraint(m._2.genericParams ++
           List(EqualsDot(rty, cToType(m._1)), EqualsDot(a, m._2.retType))
           ++ m._2.params.map(_._1).zip(es.map(_._1)).map(a => LessDot(a._2, a._1))
         ))
@@ -85,7 +85,7 @@ object TYPE {
     private def findFields(f: String, ast: List[Class]) =
       ast.flatMap(c => c.fields.filter(field => field._2.equals(f)).map(it => (c, it._1)))
 
-    private def cToType(c: Class) = RefType(c.name, c.params.map(it => it._1))
+    private def cToType(c: Class) = RefType(c.name, c.genericParams.map(it => it._1))
 
   }
 }
diff --git a/src/main/scala/hb/dhbw/Unify.scala b/src/main/scala/hb/dhbw/Unify.scala
index fa17797..de12a2a 100644
--- a/src/main/scala/hb/dhbw/Unify.scala
+++ b/src/main/scala/hb/dhbw/Unify.scala
@@ -9,6 +9,17 @@ sealed abstract class UnifyType
 final case class UnifyRefType(name: String, params: List[UnifyType]) extends UnifyType
 final case class UnifyTV(name: String) extends UnifyType
 
+/*
+sealed abstract class ResultType
+final case class ResultTV(name: String) extends ResultType
+final case class ResultRefType(name: String, params: List[ResultType]) extends ResultType
+sealed abstract class UnifyResultConstraint
+final case class AExtendsB(a: TypeVariable, b: TypeVariable) extends UnifyResultConstraint
+final case class AExtendsN(a: TypeVariable, n: ResultRefType) extends UnifyResultConstraint
+final case class AEqualsB(a: TypeVariable, b: TypeVariable) extends UnifyResultConstraint
+final case class AEqualsN(a: TypeVariable, n: ResultRefType) extends UnifyResultConstraint
+*/
+
 object Unify {
 
   def unifyIteratove(orCons: Set[Set[Set[UnifyConstraint]]], fc: FiniteClosure) : Set[Set[UnifyConstraint]] = {