title: Xcode simulator constantly download something
body: <p>Xcode 11.2.1 simulator 13.2.2 constantly download something daily about 450 MB through nsurlsessiond. Is this usual? 
  some logs</p>
  
  <pre><code>% sudo lsof | grep nsurlsessiond
  Password:
  UserEvent   60                   root  txt       REG                1,4      30016 1152921500312497946 /System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/Contents/MacOS/com.apple.nsurlsessiond
  nsurlsess  215         _nsurlsessiond  cwd       DIR                1,4        736                   2 /
  nsurlsess  215         _nsurlsessiond  txt       REG                1,4     614448 1152921500312495196 /usr/libexec/nsurlsessiond
  nsurlsess  215         _nsurlsessiond  txt       REG                1,4      28180            23592776 /Library/Preferences/Logging/.plist-cache.99GYDmPS
  nsurlsess  215         _nsurlsessiond  txt       REG                1,4   29062064 1152921500312497147 /usr/share/icu/icudt64l.dat
  nsurlsess  215         _nsurlsessiond  txt       REG                1,4   10833920            23596379 /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/0/com.apple.LaunchServices.dv/com.apple.LaunchServices-1080-v2.csstore
  nsurlsess  215         _nsurlsessiond  txt       REG                1,4    1558064 1152921500312496184 /usr/lib/dyld
  nsurlsess  215         _nsurlsessiond    0r      CHR                3,2        0t0                 310 /dev/null
  nsurlsess  215         _nsurlsessiond    1u      CHR                3,2        0t0                 310 /dev/null
  nsurlsess  215         _nsurlsessiond    2u      CHR                3,2        0t0                 310 /dev/null
  nsurlsess  215         _nsurlsessiond    3   NPOLICY                                                   
  nsurlsess  215         _nsurlsessiond    5u    systm 0x1ebb302b93b87b91        0t0                     [ctl com.apple.netsrc id 7 unit 7]
  UserEvent  311                 xxxx  txt       REG                1,4      30016 1152921500312497946 /System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/Contents/MacOS/com.apple.nsurlsessiond
  nsurlsess  345                 xxxx  txt       REG                1,4     614448 1152921500312495196 /usr/libexec/nsurlsessiond
  UserEvent 8964                 xxxx  txt       REG                1,4      29984            23127670 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/com.apple.nsurlsessiond
  nsurlsess 9001                 xxxx  txt       REG                1,4     761744            23119545 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/nsurlsessiond
  com.apple 9044                 xxxx    3w      REG                1,4   13597149            23603623 /Users/xxxx/Library/Developer/CoreSimulator/Devices/F0685A70-DEB9-4786-8368-CF98BAC7FD1A/data/Library/Caches/com.apple.nsurlsessiond/Downloads/com.apple.mobileassetd/CFNetworkDownload_O3Y86b.tmp/AssetData/adat
  xxxx@xxxx-iMac ~ % 
  </code></pre>