Traverse a JSON struct and return value.
interface IFromJSONConfig {
propertyString?: string;
}
const fromJSONDefault = Mappers.fromJson(); // FromJSON: propertyString:""
const fromJSONGetProperty = Mappers.fromJson({ propertyString: "myProperty" }); // FromJSON: propertyString:"myProperty"
const fromJSONTraversePropertyAndArray = Mappers.fromJson({ propertyString: "propertyWithArray.0" }); // FromJSON: propertyString:"propertyWithArray.0"