1 files changed, 19 insertions, 8 deletions
diff --git a/src/auth/types/property_map.rs b/src/auth/types/property_map.rs
index 964b06f..ddfc9ce 100644
--- a/src/auth/types/property_map.rs
+++ b/src/auth/types/property_map.rs
@@ -2,22 +2,33 @@ use std::fmt::Formatter;
 use multimap::MultiMap;
 use serde::de::{SeqAccess, Visitor};
 use serde::{Deserializer, Serializer};
-use serde::ser::SerializeSeq;
 use crate::auth::Property;
 
 pub type PropertyMap = MultiMap<String, Property>;
 
+pub mod legacy {
+    use serde::Serializer;
+    use super::PropertyMap;
+
+    pub fn serialize<S>(value: &PropertyMap, serializer: S) -> Result<S::Ok, S::Error>
+    where S: Serializer
+    {
+        serializer.collect_map(value.iter_all()
+            .filter_map(|(k, v)| {
+                if v.is_empty() {
+                    None
+                } else {
+                    Some((k, v.iter().map(|p| &p.value).collect::<Vec<_>>()))
+                }
+            }))
+    }
+}
+
 pub fn serialize<S>(value: &PropertyMap, serializer: S) -> Result<S::Ok, S::Error>
 where
     S: Serializer
 {
-    let mut seq = serializer.serialize_seq(Some(value.keys().len()))?;
-
-    for (_, prop) in value.flat_iter() {
-        seq.serialize_element(prop)?;
-    }
-
-    seq.end()
+    serializer.collect_seq(value.flat_iter().map(|(_, v)| v))
 }
 
 pub fn deserialize<'de, D>(deserializer: D) -> Result<PropertyMap, D::Error>