/usr/include/KF5/ is in libkf5texteditor-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KTextEditor/
/usr/include/KF5/KTextEditor/KTextEditor/
/usr/include/KF5/KTextEditor/KTextEditor/AnnotationInterface
/usr/include/KF5/KTextEditor/KTextEditor/Application
/usr/include/KF5/KTextEditor/KTextEditor/Attribute
/usr/include/KF5/KTextEditor/KTextEditor/CodeCompletionInterface
/usr/include/KF5/KTextEditor/KTextEditor/CodeCompletionModel
/usr/include/KF5/KTextEditor/KTextEditor/CodeCompletionModelControllerInterface
/usr/include/KF5/KTextEditor/KTextEditor/Command
/usr/include/KF5/KTextEditor/KTextEditor/ConfigInterface
/usr/include/KF5/KTextEditor/KTextEditor/ConfigPage
/usr/include/KF5/KTextEditor/KTextEditor/Cursor
/usr/include/KF5/KTextEditor/KTextEditor/Document
/usr/include/KF5/KTextEditor/KTextEditor/DocumentCursor
/usr/include/KF5/KTextEditor/KTextEditor/Editor
/usr/include/KF5/KTextEditor/KTextEditor/MainWindow
/usr/include/KF5/KTextEditor/KTextEditor/MarkInterface
/usr/include/KF5/KTextEditor/KTextEditor/Message
/usr/include/KF5/KTextEditor/KTextEditor/ModificationInterface
/usr/include/KF5/KTextEditor/KTextEditor/MovingCursor
/usr/include/KF5/KTextEditor/KTextEditor/MovingInterface
/usr/include/KF5/KTextEditor/KTextEditor/MovingRange
/usr/include/KF5/KTextEditor/KTextEditor/MovingRangeFeedback
/usr/include/KF5/KTextEditor/KTextEditor/Plugin
/usr/include/KF5/KTextEditor/KTextEditor/Range
/usr/include/KF5/KTextEditor/KTextEditor/SessionConfigInterface
/usr/include/KF5/KTextEditor/KTextEditor/TextHintInterface
/usr/include/KF5/KTextEditor/KTextEditor/View
/usr/include/KF5/KTextEditor/ktexteditor/
/usr/include/KF5/KTextEditor/ktexteditor/annotationinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/application.h
/usr/include/KF5/KTextEditor/ktexteditor/attribute.h
/usr/include/KF5/KTextEditor/ktexteditor/codecompletioninterface.h
/usr/include/KF5/KTextEditor/ktexteditor/codecompletionmodel.h
/usr/include/KF5/KTextEditor/ktexteditor/codecompletionmodelcontrollerinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/command.h
/usr/include/KF5/KTextEditor/ktexteditor/configinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/configpage.h
/usr/include/KF5/KTextEditor/ktexteditor/cursor.h
/usr/include/KF5/KTextEditor/ktexteditor/document.h
/usr/include/KF5/KTextEditor/ktexteditor/documentcursor.h
/usr/include/KF5/KTextEditor/ktexteditor/editor.h
/usr/include/KF5/KTextEditor/ktexteditor/mainwindow.h
/usr/include/KF5/KTextEditor/ktexteditor/markinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/message.h
/usr/include/KF5/KTextEditor/ktexteditor/modificationinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/movingcursor.h
/usr/include/KF5/KTextEditor/ktexteditor/movinginterface.h
/usr/include/KF5/KTextEditor/ktexteditor/movingrange.h
/usr/include/KF5/KTextEditor/ktexteditor/movingrangefeedback.h
/usr/include/KF5/KTextEditor/ktexteditor/plugin.h
/usr/include/KF5/KTextEditor/ktexteditor/range.h
/usr/include/KF5/KTextEditor/ktexteditor/sessionconfiginterface.h
/usr/include/KF5/KTextEditor/ktexteditor/texthintinterface.h
/usr/include/KF5/KTextEditor/ktexteditor/view.h
/usr/include/KF5/KTextEditor/ktexteditor_export.h
/usr/include/KF5/ktexteditor_version.h