java.io.IOException: can not have more than one return type

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can not have more than one return type
java.io.IOException: can not have more than one return type
at weblogic.soap.wsdl.binding.Message.getReturnType(Message.java:64)
at weblogic.soap.wsdl.binding.BindingOperation.populate(BindingOperation.java:52)
at weblogic.soap.wsdl.binding.Binding.populate(Binding.java:48)
at weblogic.soap.wsdl.binding.Definition.populate(Definition.java:116)
at weblogic.soap.WebServiceProxy.getServiceAt(WebServiceProxy.java:173)
at weblogic.soap.WebServiceProxy.getServiceAt(WebServiceProxy.java:137)
at weblogicx.soap.tools.broker.ExternalService.getView(ExternalService.java:209)
at weblogicx.soap.tools.broker.ExternalService.(ExternalService.java:38)
at weblogicx.soap.tools.broker.Registry$2.mouseReleased(Registry.java:192)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
at java.awt.Component.processMouseEvent(Component.java:3715)
at java.awt.Component.processEvent(Component.java:3544)
at java.awt.Container.processEvent(Container.java:1164)
at java.awt.Component.dispatchEventImpl(Component.java:2593)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2216)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
at java.awt.Container.dispatchEventImpl(Container.java:1200)
at java.awt.Window.dispatchEventImpl(Window.java:914)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)

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