okio.BlackholeSink -> z50:
# {"id":"sourceFile","fileName":"Okio.kt"}
    1:1:void close():49:49 -> close
    1:1:void flush():47:47 -> flush
    1:3:okio.Timeout timeout():48:48 -> h
      # {"id":"com.android.tools.r8.residualsignature","signature":"()Lyb7;"}
    1:4:void write(okio.Buffer,long):46:46 -> y0
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Ly80;J)V"}
