Class NF_filt1
   size=12 align=4
   base size=12 base align=4
NF_filt1 (0x0x7f45c2ba05a0) 0

Class NF_filt2
   size=20 align=4
   base size=20 base align=4
NF_filt2 (0x0x7f45c2ba0600) 0

Class NF_filt3
   size=28 align=4
   base size=28 base align=4
NF_filt3 (0x0x7f45c2ba0660) 0

