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Trait to determine whether a type satisfies the DynamicBuffer requirements.
template< typename T> struct is_dynamic_buffer : public integral_constant< bool, automatically_determined >
        If ASIO_NO_DYNAMIC_BUFFER_V1
        is not defined, determines whether the type satisfies the DynamicBuffer_v1
        requirements. Otherwise, if ASIO_NO_DYNAMIC_BUFFER_V1
        is defined, determines whether the type satisfies the DynamicBuffer_v2 requirements.
      
        Header: asio/buffer.hpp
      
        Convenience header: asio.hpp