I can also get concept by name

src/core/concept.py

@@ -16,6 +16,8 @@ PROPERTIES_TO_SERIALIZE = PROPERTIES_FOR_DIGEST + tuple(["id"])
 PROPERTIES_FOR_NEW = ("where", "pre", "post", "body", "desc")
 VARIABLE_PREFIX = "__var__"
 ORIGIN = "##origin##"  # same as Serializer.ORIGIN but I don't want to include the reference
+DEFINITION_TYPE_BNF = "bnf"
+DEFINITION_TYPE_DEF = "def"
 
 
 class ConceptParts(Enum):
@@ -219,7 +221,10 @@ class Concept:
             return self
 
         if tokens is None:
-            tokens = list(Tokenizer(self.metadata.name))
+            if self.metadata.definition_type == DEFINITION_TYPE_DEF:
+                tokens = list(Tokenizer(self.metadata.definition))
+            else:
+                tokens = list(Tokenizer(self.metadata.name))
 
         variables = [p[0] for p in self.metadata.props] if len(core.utils.strip_tokens(tokens, True)) > 1 else []