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    MongoDB C++ Driver mongocxx-4.0.0
    
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X macro header expanding the user-provided BSONCXX_ENUM macro over BSON types. 
BSONCXX_ENUM macro must be defined by the user prior to including this header!The user-provided BSONCXX_ENUM macro must accept two arguments: the name of the type and the corresponding value. See the source code for the list of expanded types and values.