FIA Serialization:
 $1:FixedIntegerArray 
$1:[ 5  1  2  3  4  5  $0 ]

RPA Serialization:
 $1:ResizablePMCArray 
$1:[ 3  $1  $2:Integer  $3:Hash  $0 ]
$2:[ 42  $0 ]
$3:[ 2  2  -97  fixed_8:ascii:"Hello World"  $2  fixed_8:ascii:"Circular Ref"  $1  $0 ]