update of javadoc

json-path/src/main/java/com/jayway/jsonpath/internal/function/latebinding/ILateBindingValue.java

@@ -6,5 +6,13 @@ package com.jayway.jsonpath.internal.function.latebinding;
  * Created by mattg on 3/27/17.
  */
 public interface ILateBindingValue {
+    /**
+     * Obtain the value of the parameter at runtime using the parameter state and invocation of other late binding values
+     * rather than maintaining cached state which ends up in a global store and won't change as a result of external
+     * reference changes.
+     *
+     * @return
+     *      The value of evaluating the context at runtime.
+     */
     Object get();
 }