/usr/share/kservices5/filenamesearch.protocol is in kio-extras-data 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | [Protocol]
exec=kf5/kio/filenamesearch
protocol=filenamesearch
input=none
output=filesystem
reading=true
writing=false
deleting=true
linking=false
makedir=false
moving=false
listing=Name,Type,Size,Date,AccessDate,Access,Owner,Group,Link
source=false
Icon=edit-find
Class=:local
determineMimetypeFromExtension=false
maxInstances=10
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