schema mount UPDATE support for creating nested data

Not just parsing it directly.
diff --git a/src/plugins_exts/nacm.c b/src/plugins_exts/nacm.c
index d8e1ca8..aa0d0e8 100644
--- a/src/plugins_exts/nacm.c
+++ b/src/plugins_exts/nacm.c
@@ -160,7 +160,7 @@
         .plugin.compile = &nacm_compile,
         .plugin.sprinter = NULL,
         .plugin.free = NULL,
-        .plugin.parse = NULL,
+        .plugin.snode = NULL,
         .plugin.validate = NULL
     }, {
         .module = "ietf-netconf-acm",
@@ -171,7 +171,7 @@
         .plugin.compile = &nacm_compile,
         .plugin.sprinter = NULL,
         .plugin.free = NULL,
-        .plugin.parse = NULL,
+        .plugin.snode = NULL,
         .plugin.validate = NULL
     }, {
         .module = "ietf-netconf-acm",
@@ -182,7 +182,7 @@
         .plugin.compile = &nacm_compile,
         .plugin.sprinter = NULL,
         .plugin.free = NULL,
-        .plugin.parse = NULL,
+        .plugin.snode = NULL,
         .plugin.validate = NULL
     }, {
         .module = "ietf-netconf-acm",
@@ -193,7 +193,7 @@
         .plugin.compile = &nacm_compile,
         .plugin.sprinter = NULL,
         .plugin.free = NULL,
-        .plugin.parse = NULL,
+        .plugin.snode = NULL,
         .plugin.validate = NULL
     },
     {0} /* terminating zeroed item */