/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/ is in libasm3-java-doc 3.3.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/SignatureReader.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/SignatureVisitor.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/SignatureWriter.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/class-use/
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/class-use/SignatureReader.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/class-use/SignatureVisitor.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/class-use/SignatureWriter.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/package-frame.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/package-summary.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/package-tree.html
/usr/share/doc/libasm3-java-doc/api/org/objectweb/asm/signature/package-use.html