I want to design specific class hierarchy consisting of three classes: Certificate, Organization, User. Both Certificate and Organization seem to me to be kinda
difference-lists
oracle-apex-18.2
drupal-views
relation
multi-factor-authentication
sql-standards
real-time-systems
port-number
underscores-wp
getlasterror
trustwallet
array-intersect
temporary-files
public-method
delta-live-tables
multiprocessing-manager
android-gridlayout
r-xlsx
mxml
xcode-project
common.logging
nsarray
mkcoordinateregion
content-type
root-access
twilio-autopilot
permission-denied
wscf
google-natural-language
asp.net-mvc-2