private void AddMethodCall(SyntaxNode node, Method clientMethod, Method referencedEntity)
{
Invocation invocation = importer.CreateNewAssociation <Invocation>("FAMIX.Invocation");
invocation.sender = clientMethod;
invocation.AddCandidate(referencedEntity);
invocation.signature = node.Span.ToString();
//invocation.receiver = referencedEntity;
clientMethod.AddOutgoingInvocation(invocation);
referencedEntity.AddIncomingInvocation(invocation);
importer.CreateSourceAnchor(invocation, node);
}