fix: identify_all method (rm ga4gh prefixes)

* ga4gh prefixes were not getting removed during serialization.
  SequenceReferences are the only types that do not need to be removed

src/ga4gh/core/_internal/identifiers.py

@@ -210,6 +210,10 @@ def identify_all(
     if input_obj is None:
         return None
     output_obj = input_obj
+    if isinstance(input_obj, str):
+        if input_obj.startswith("ga4gh:") and not input_obj.startswith("ga4gh:SQ"):
+            return input_obj.split(".")[-1]
+
     if is_pydantic_custom_type(input_obj):
         val = export_pydantic_model(input_obj)
         if isinstance(val, str) and is_curie_type(val) and is_ga4gh_identifier(val):

tests/test_vrs2.py

@@ -200,6 +200,40 @@ def test_enref():
     assert dereffed.location.model_dump(exclude_none=True) == allele_383650.location.model_dump(exclude_none=True)
     assert dereffed.model_dump() == allele_383650.model_dump()
 
+def test_enref2():
+    object_store = {}
+    a = {
+        "type": "Allele",
+        "location": {
+            "type": "SequenceLocation",
+            "sequenceReference": {
+                "type": "SequenceReference",
+                "refgetAccession": "SQ.IIB53T8CNeJJdUqzn9V_JnRtQadwWCbl"
+            },
+            "start": 44908821,
+            "end": 44908822
+        },
+        "state": {
+            "type": "LiteralSequenceExpression",
+            "sequence": "T"
+        }
+    }
+    vo_a = models.Allele(**a)
+    a_enreffed = vrs_enref(vo_a, object_store=object_store)
+    orig_no_loc = vo_a.model_dump().copy()
+    orig_no_loc.pop("location")
+    actual_no_loc = a_enreffed.model_dump().copy()
+    actual_no_loc.pop("location")
+    assert orig_no_loc == actual_no_loc, "Original and enreffed match except for enreffed field"
+    assert a_enreffed.location == 'ga4gh:SL.m4B7OEJ6J3q6gPakM8mSEqKZeQkj1KYC'
+    assert a_enreffed.model_dump(exclude_none=True) == {
+        'type': 'Allele',
+        'location': 'ga4gh:SL.m4B7OEJ6J3q6gPakM8mSEqKZeQkj1KYC',
+        'state': {
+            'type': 'LiteralSequenceExpression',
+            'sequence': 'T'
+        }
+    }
 
 def test_class_refatt_map():
     class_refatt_map_expected = {