docs: private Object createSharedProcessInstance()   {
  		ProxyFactory proxyFactoryBean = new ProxyFactory(ProcessInstance.class, new MethodInterceptor() {
  			public Object invoke(MethodInvocation methodInvocation) throws Throwable {
  				String methodName = methodInvocation.getMethod().getName() ;
  
  				logger.info("method invocation for " + methodName+ ".");
  				if(methodName.equals("toString"))
  					return "SharedProcessInstance";
  
  
  				ProcessInstance processInstance = Context.getExecutionContext().getProcessInstance();
  				Method method = methodInvocation.getMethod();
  				Object[] args = methodInvocation.getArguments();
  				Object result = method.invoke(processInstance, args);
  				return result;
  			}
  		});
  		return proxyFactoryBean.getProxy(this.classLoader);
  	}