/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/ is in libcommons-codec-java-doc 1.5-1.
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/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base32.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base32InputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base32OutputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base64.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base64InputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Base64OutputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/BaseNCodec.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/BaseNCodecInputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/BaseNCodecOutputStream.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/BinaryCodec.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/Hex.html
/usr/share/doc/libcommons-codec-java/api/org/apache/commons/codec/binary/class-use/StringUtils.html