/usr/share/doc/libhamcrest-java/api/org/hamcrest/text/ is in libhamcrest-java-doc 1.3-5ubuntu1.
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/usr/share/doc/libhamcrest-java/api/org/hamcrest/text/IsEmptyString.html
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/usr/share/doc/libhamcrest-java/api/org/hamcrest/text/class-use/
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/usr/share/doc/libhamcrest-java/api/org/hamcrest/text/package-use.html