Rename leafrefBase to leafrefBaseType

leafrefBase could also mean the path of leafref and that's kind of
misleading.

Change-Id: I56e0b0edd0f21d5ca289ad9cfc4e056d79f6bed0
diff --git a/src/yang_schema.cpp b/src/yang_schema.cpp
index 06749ba..297ea53 100644
--- a/src/yang_schema.cpp
+++ b/src/yang_schema.cpp
@@ -281,7 +281,7 @@
     return impl_leafType(getSchemaNode(path));
 }
 
-yang::LeafDataTypes YangSchema::leafrefBase(const schemaPath_& location, const ModuleNodePair& node) const
+yang::LeafDataTypes YangSchema::leafrefBaseType(const schemaPath_& location, const ModuleNodePair& node) const
 {
     using namespace std::string_literals;
     libyang::Schema_Node_Leaf leaf(getSchemaNode(location, node));