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I created Functoid (Vertex) with 2 parameters for example "String getNumbers(String, String)", then closed and opened NetBeans and Functoid (Vertex) was transformed to "AnyType getNumbers(AnyType)" It was lost vertexItems(parameters of function) and vertexItem type.
*** This bug has been marked as a duplicate of bug 174795 ***
marked as duplicate and till will be fixed in next release. check ticket 174179