Install libfelix-framework-java-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libfelix-framework-java-doc
Description:
Javadoc API documentation for the Felix Framework subproject
The Felix Framework subproject is an implementation of the OSGi R4.2 core framework specification. This package contains Javadoc API documentation.
Homepage: http://felix.apache.org/site/apache-felix-framework.html
Version: 4.6.1-2
Section: universe/doc