1 files changed, 23 insertions, 0 deletions
diff --git a/Firestore/Source/Public/FIRFieldValue.h b/Firestore/Source/Public/FIRFieldValue.h
index 11a0da0..d896587 100644
--- a/Firestore/Source/Public/FIRFieldValue.h
+++ b/Firestore/Source/Public/FIRFieldValue.h
@@ -38,6 +38,29 @@ NS_SWIFT_NAME(FieldValue)
  */
 + (instancetype)fieldValueForServerTimestamp NS_SWIFT_NAME(serverTimestamp());
 
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * union the given elements with any array value that already exists on the server. Each
+ * specified element that doesn't already exist in the array will be added to the end. If the
+ * field being modified is not already an array it will be overwritten with an array containing
+ * exactly the specified elements.
+ *
+ * @param elements The elements to union into the array.
+ * @return The FieldValue sentinel for use in a call to setData() or updateData().
+ */
++ (instancetype)fieldValueForArrayUnion:(NSArray<id> *)elements NS_SWIFT_NAME(arrayUnion(_:));
+
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * remove the given elements from any array value that already exists on the server. All
+ * instances of each element specified will be removed from the array. If the field being
+ * modified is not already an array it will be overwritten with an empty array.
+ *
+ * @param elements The elements to remove from the array.
+ * @return The FieldValue sentinel for use in a call to setData() or updateData().
+ */
++ (instancetype)fieldValueForArrayRemove:(NSArray<id> *)elements NS_SWIFT_NAME(arrayRemove(_:));
+
 @end
 
 NS_ASSUME_NONNULL_END