A DESCRIPTION OF THE PROBLEM :
See https://download.java.net/java/early_access/jdk15/docs/api/java.base/java/lang/invoke/package-summary.html

1) The classes MethodHandle VarHandle contain -> The classes MethodHandle and VarHandle contain
2) For example, for dynamically-computed call site, a the first argument -> For example, for a dynamically-computed call site, the first argument