1.3.1dev: Make `get_path_history` an abstract method
1.3.1dev: Make `get_path_history` an abstract method

Refs #11610, #11901.


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@14883 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac