VariablesExpressionInfo
VariablesExpressionInfo(typeExpression, node);
VariablesExpressionInfo* variableInfo
= dynamic_cast<VariablesExpressionInfo*>(info);
VariablesExpressionInfo(const BString& expression, ModelNode* node)
VariablesExpressionInfo* fPendingTypecastInfo;
class VariablesExpressionInfo;