Function dds_stream_extensibility 

pub unsafe extern "C" fn dds_stream_extensibility(
    ops: *const u32,
    ext: *mut dds_cdr_type_extensibility,
) -> bool

@brief Determine the top-level type extensibility from stream operations. @component cdr_serializer

@param ops marshalling metadata to inspect @param ext output for the detected top-level extensibility @returns true when extensibility was detected, false otherwise