Adds example of dynamic calls closes #115

Author: JJ

doc/Language/packages.pod6

@@ -132,6 +132,33 @@ C<CORE>). The current package is searched last.
 Use the C<MY> pseudopackage to limit the lookup to the current lexical scope,
 and C<OUR> to limit the scopes to the current package scope.
 
+In the same vein, class and method names can be interpolated too.
+
+    role with-method {
+        method a-method { return "in-a-method of " ~ $?CLASS.^name  };
+    }
+
+    class a-class does with-method {
+        method another-method { return 'in-another-method' };
+    }
+
+    class b-class does with-method {};
+
+    my $what-class='a-class';
+
+    say ::($what-class).a-method;
+    $what-class = 'b-class';
+    say ::($what-class).a-method;
+
+    my $what-method='a-method';
+    say a-class."$what-method"();
+    $what-method='another-method';
+    say a-class."$what-method"();
+
+X<|::($c).m>
+X<|A."$m"()>
+
+
 =head2 Direct lookup
 
 To do direct lookup in a package's symbol table without scanning, treat the