$ perl -MDevel::Peek -e'Dump( $1 )'
SV = PVMG(0x561e81adde40) at 0x561e81af86f0
  REFCNT = 1
  FLAGS = (GMG,SMG)                # Has get magic, has set magic
  IV = 0
  NV = 0
  PV = 0
  MAGIC = 0x561e81b067d0           # Magic's data, incl callbacks
    MG_VIRTUAL = &PL_vtbl_sv
    MG_TYPE = PERL_MAGIC_sv(\0)
    MG_OBJ = 0x561e81af86d8
    MG_LEN = 1