Indicate a better error message if a composite component MethodExpression 
includes parameters
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                 Key: MYFACES-2828
                 URL: https://issues.apache.org/jira/browse/MYFACES-2828
             Project: MyFaces Core
          Issue Type: Task
          Components: JSR-314
    Affects Versions: 2.0.1
            Reporter: Jakob Korherr
            Assignee: Jakob Korherr
            Priority: Minor


If you use something like this

action="#{cc.attrs.method(cc.attrs.param)}"

inside a composite component, you will get an unclear ELException, saying 
"Method method not found", because the ValueExpression which retrieves the 
MethodExpression from the composite component attribute map does not support 
params (of course). Thus a better exception message is clearly needed in this 
case.

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