Description of problem:
I try to call REST WS from bean service, REST WS is very simple.

Composite is composed from one bean service, this bean service has one reference, this reference is promoted to composite reference. 

Method has no params, return type is void. 

Reference is succesfully injected into bean service, can be called, but NPE exception is thrown:

Caused by: java.lang.NullPointerException
	at org.switchyard.component.bean.ClientProxyBean$ClientProxyInvocationHandler.invoke(ClientProxyBean.java:313) [switchyard-component-bean-0.8.1.Final.jar:0.8.1.Final]
	at com.sun.proxy.$Proxy182.deleteOrders(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_21]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_21]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_21]
	at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_21]
	at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:45) [weld-core-1.1.11.Final-redhat-1.jar:1.1.11.Final-redhat-1]
	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105) [weld-core-1.1.11.Final-redhat-1.jar:1.1.11.Final-redhat-1]
	at org.jboss.weld.proxies.OrderResource$1366014919$Proxy$_$$_WeldClientProxy.deleteOrders(OrderResource$1366014919$Proxy$_$$_WeldClientProxy.java) [weld-core-1.1.11.Final-redhat-1.jar:]
	at org.jboss.soa.qa.rest_bean_service.bean.OrderProxyServiceBean.deleteOrders(OrderProxyServiceBean.java:63) [rest-bean-service-test.jar:]
	... 91 more



It seems that org.switchyard.component.bean.ClientProxyBean$ClientProxyInvocationHandler.invoke(ClientProxyBean.java:313) method should receive empty args array, but receives null and then NPE is thrown.