I can also get concept by name

tests/core/test_concept.py

@@ -1,6 +1,6 @@
 import pytest
 
-from core.concept import Concept, ConceptParts
+from core.concept import Concept, ConceptParts, DEFINITION_TYPE_DEF
 
 
 @pytest.mark.parametrize("name, properties, expected", [
@@ -29,6 +29,25 @@ def test_i_can_compute_the_key(name, properties, expected):
     assert concept.key == expected
 
 
+def test_i_can_compute_the_key_when_from_definition():
+
+    # if definition is not defined, use the name
+    concept = Concept()
+    concept.metadata.name = "hello a"
+    concept.metadata.props = [("a", None)]
+    concept.init_key()
+    assert concept.key == "hello __var__0"
+
+    # if definition is defined, use it
+    concept = Concept()
+    concept.metadata.name = "greetings"
+    concept.metadata.definition = "hello a"
+    concept.metadata.definition_type = DEFINITION_TYPE_DEF
+    concept.metadata.props = [("a", None)]
+    concept.init_key()
+    assert concept.key == "hello __var__0"
+
+
 def test_key_does_not_use_variable_when_definition_is_set():
     concept = Concept("plus").def_prop('plus')