This file is indexed.

/usr/share/kde4/services/metainfo.protocol is in kdelibs5-data 4:4.14.16-0ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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[Protocol]
exec=kio_metainfo
protocol=metainfo
input=stream
output=stream
reading=true
writing=true
source=false
Icon=help-about