diff --git a/Makefile b/Makefile
index 97e9121afbe9b72615518217eb927180f70478dd..ff93581144936c5ff80f9be4188b9f5eaac589a8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 PROJECT = yangson
-VERSION = 1.3.15
+VERSION = 1.3.16
 .PHONY = tags deps install-deps test
 
 tags:
diff --git a/docs/datamodel.rst b/docs/datamodel.rst
index aad06bea24504f627040d69181b051177f9db881..8565368c4b758234522a3fbf307efaf6d0214742 100644
--- a/docs/datamodel.rst
+++ b/docs/datamodel.rst
@@ -60,6 +60,20 @@ __ http://www.sphinx-doc.org/en/stable/ext/doctest.html
 
       >>> from yangson import DataModel
 
+   .. rubric:: Instance Attributes
+
+   .. attribute:: schema
+
+      Root node of the schema tree.
+
+   .. attribute:: schema_data
+
+      Object describing various properties extracted from the data model.
+
+   .. attribute:: yang_library
+
+      Python dictionary containing parsed YANG library data.
+
    .. rubric:: Public Methods
 
    .. classmethod:: from_file(name: str, mod_path: List[str] = ["."], \
@@ -77,6 +91,8 @@ __ http://www.sphinx-doc.org/en/stable/ext/doctest.html
       .. doctest::
 
 	 >>> dm = DataModel.from_file("yang-library-ex1.json")
+	 >>> dm.yang_library['ietf-yang-library:modules-state']['module-set-id']
+	 'ae4bf1ddf85a67ab94a9ab71593cd1c78b7f231d'
 
    .. method:: module_set_id() -> str
 
diff --git a/yangson/datamodel.py b/yangson/datamodel.py
index acf78ec2b9555387f0604305b55785ba1729aea6..36604c7787091b317de2d16f1052f8333ee963e8 100644
--- a/yangson/datamodel.py
+++ b/yangson/datamodel.py
@@ -78,13 +78,14 @@ class DataModel:
         self.schema = SchemaTreeNode()
         self.schema._ctype = ContentType.all
         try:
-            yl = json.loads(yltxt)
+            self.yang_library = json.loads(yltxt)
         except json.JSONDecodeError as e:
             raise BadYangLibraryData(str(e)) from None
-        self.schema_data = SchemaData(yl, mod_path)
+        self.schema_data = SchemaData(self.yang_library, mod_path)
         self._build_schema()
         self.schema.description = description if description else (
-            "Data model ID: " + yl["ietf-yang-library:modules-state"]["module-set-id"])
+            "Data model ID: " +
+            self.yang_library["ietf-yang-library:modules-state"]["module-set-id"])
 
     def module_set_id(self) -> str:
         """Compute unique id of YANG modules comprising the data model.