# API Reference


## Classes


Main classes provided by the package


[Registry](Registry.md#gdtest_sphinx_mixed_roles.Registry)  
A registry that maps names to types.


## Functions


Utility functions


[lookup()](lookup.md#gdtest_sphinx_mixed_roles.lookup)  
Look up a type in the default `Registry`.

[register()](register.md#gdtest_sphinx_mixed_roles.register)  
Register a type in the default `Registry`.

[validate_entry()](validate_entry.md#gdtest_sphinx_mixed_roles.validate_entry)  
Validate a registry entry dict.