A Tapestry extension that adds a new binding prefix, "prop:". The expression is just a simple property name. The advantage of this over the default "ognl:" binding prefix is that a new Java class is created, via bytecode enhancement, and access to the property does not use any Java reflection. Creates PropertyAccessor classes, given a target class, and a property of that class (which may be read/write, read-only, or write-only). Builds upon PropertyAccessorClassFactory to find and instantiate instances of PropertyAccessor for a specific object instance and property name. Manages a cache of PropertyAccessor classes. Implementation of the "prop:" binding prefix, which is built around PropertyAccessor instances provided by the PropertyAccessorSource.