A generic converter that conditionally executes.
Applies a rule that determines if a converter between a set of convertible types matches given a client request to convert between a source field of convertible type S and a target field of convertible type T.
Often used to selectively match custom conversion logic based on the presence of a field or class-level characteristic, such as an annotation or method. For example, when converting from a String field to a Date field, an implementation might return true if the target field has also been annotated with @DateTimeFormat.
As another example, when converting from a String field to an Account field, an implementation might return true if the target Account class defines a public static findAccount(String) method.