# Functions
CreateVersionsRegistry creates the version registry instances and populates it with the versions and their handlers.
NewApiConfigParser returns a new instance of apiConfigParser.
# Variables
ErrNoDirectoryAtPath signals that the file is not a directory.
# Structs
FacadeArgs holds the arguments needed for creating a base facade.
# Interfaces
ApiConfigParser defines the actions that an api config parser should be able to do.