16. The system of claim 10 , wherein the style component is to provide a mask to be associated with a value of the property.
10. A computer-implemented system comprising: a request detector to receive a request to create a modeled component having an extensible style component and an entity component; a styles designer to create the extensible style component as a direct child of the modeled component, the extensible style component defining an aspect of a user interface, wherein the styles designer creates an additional style component, the additional style component defining an additional aspect of the user interface, and the reference to the style component further applying the additional aspect of the user interface defined by the additional style component to a property of the entity component based on the style component extending the additional style component. an entity builder to create the entity component representing a data type, the entity component including the property that includes an attribute referencing the extensible style component, the reference to the extensible style component applying the aspect of the user interface defined by the extensible style component to the property of the entity component, the extensible style component and the entity component being separate components; a model resolution module to create an in-memory representation of the modeled component; and a storing module to store the in-memory representation of the modeled component in a memory device.