/**
  * update means renaming of method name, parameter and replacing
  * parameter names in method body
  *
  * @param \EBT\ExtensionBuilder\Domain\Model\DomainObject\AbstractProperty $oldProperty
  * @param \EBT\ExtensionBuilder\Domain\Model\DomainObject\AbstractProperty $newProperty
  * @param string $methodType get,set,add,remove,is
  *
  * @return void
  */
 protected function updateMethod($oldProperty, $newProperty, $methodType)
 {
     $oldMethodName = $this->classBuilder->getMethodName($oldProperty, $methodType);
     // the method to be merged
     $mergedMethod = $this->classObject->getMethod($oldMethodName);
     if (!$mergedMethod) {
         // no previous version of the method exists
         return;
     }
     $newMethodName = $this->classBuilder->getMethodName($newProperty, $methodType);
     $this->log('updateMethod:' . $oldMethodName . '=>' . $newMethodName, 'extension_builder');
     if ($oldProperty->getName() != $newProperty->getName()) {
         // rename the method
         $mergedMethod->setName($newMethodName);
         $oldMethodBody = $mergedMethod->getBodyStmts();
         $oldComment = $mergedMethod->getDocComment();
         $newMethodBody = $this->replacePropertyNameInMethodBody($oldProperty->getName(), $newProperty->getName(), $oldMethodBody);
         $mergedMethod->setBodyStmts($newMethodBody);
     }
     // update the method parameters
     $methodParameters = $mergedMethod->getParameters();
     if (!empty($methodParameters)) {
         $parameterTags = $mergedMethod->getTagValues('param');
         foreach ($methodParameters as $methodParameter) {
             $oldParameterName = $methodParameter->getName();
             if ($oldParameterName == $this->classBuilder->getParameterName($oldProperty, $methodType)) {
                 $newParameterName = $this->classBuilder->getParameterName($newProperty, $methodType);
                 $methodParameter->setName($newParameterName);
                 $newMethodBody = $this->replacePropertyNameInMethodBody($oldParameterName, $newParameterName, $mergedMethod->getBodyStmts());
                 $mergedMethod->setBodyStmts($newMethodBody);
             }
             $typeHint = $methodParameter->getTypeHint();
             if ($typeHint) {
                 if ($oldProperty->isRelation()) {
                     /** @var $oldProperty \EBT\ExtensionBuilder\Domain\Model\DomainObject\Relation\AbstractRelation */
                     if ($typeHint == $oldProperty->getForeignClassName()) {
                         $methodParameter->setTypeHint($this->updateExtensionKey($this->getForeignClassName($newProperty)));
                     }
                 }
             }
             $parameterTags[$methodParameter->getPosition()] = $this->classBuilder->getParamTag($newProperty, $methodType);
             $mergedMethod->replaceParameter($methodParameter);
         }
         $mergedMethod->setTag('param', $parameterTags);
     }
     $returnTagValue = $mergedMethod->getTagValues('return');
     if ($returnTagValue != 'void') {
         $mergedMethod->setTag('return', $newProperty->getTypeForComment() . ' ' . $newProperty->getName());
     }
     // replace property names in description
     $mergedMethod->setDescription(str_replace($oldProperty->getName(), $newProperty->getName(), $mergedMethod->getDescription()));
     if ($oldProperty instanceof AbstractRelation && $newProperty instanceof AbstractRelation) {
         $mergedMethod->setDescription(str_replace($oldProperty->getForeignClassName(), $newProperty->getForeignClassName(), $mergedMethod->getDescription()));
     }
     $this->classObject->removeMethod($oldMethodName);
     $this->classObject->addMethod($mergedMethod);
 }