fix(test): CtGenerationTest#testGenerateRoleHandler egg/chicken problem #2087
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Fix of problem reported in #2085
When the Spoon model is changed, then we have to generate RoleHandlers which fits to such modified Spoon model. But role handlers generator internally uses Pattern which uses Metamodel which uses RoleHandlers - expects that they fit to the model - ... so it fails if RoleHandlers are not fitting... and it is then not possible to generate new RoleHandlers.
Solution -> this PR: In case of generating of RoleHandlers the Metamodel is switched to special mode where RoleHandlers are not used, but it uses slow Java reflection instead to access Spoon model attributes.