Serialization/Deserialization what am I doing wrong?

When I enter the following in REPL,

using Serialization
buffer = IOBuffer()
serialize(buffer, [1,2,3])
deserialize(buffer)

I get this error:

ERROR: EOFError: read end of file
Stacktrace:
 [1] read
   @ ./iobuffer.jl:217 [inlined]
 [2] deserialize
   @ /build/julia/src/julia-1.6.1/usr/share/julia/stdlib/v1.6/Serialization/src/Serialization.jl:782 [inlined]
 [3] deserialize(s::IOBuffer)
   @ Serialization /build/julia/src/julia-1.6.1/usr/share/julia/stdlib/v1.6/Serialization/src/Serialization.jl:769
 [4] top-level scope
   @ REPL[4]:1

and the documentation does not help me much: Serialization · The Julia Language

I can test that something has been written:

julia> serialize(buffer, [1,2,3])
24

julia> String(take!(buffer))
"7JL\r\x04\0\0\0\x15\0\b\xe2\x01\0\0\0\0\0\0\0\x02\0\0\0\0\0\0\0\x03\0\0\0\0\0\0\0"

What am I doing wrong?

I’m stupid, that’s what should be done:

buffer = IOBuffer()
serialize(buffer, [1,2,3])
seek(buffer,0)
deserialize(buffer)

which yields:

3-element Vector{Int64}:
 1
 2
 3

Hope it can help someone else…

PS: found the answer in the tests

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