[CALCITE-3324] Add create method in MetaResultSet
diff --git a/core/src/main/java/org/apache/calcite/avatica/Meta.java b/core/src/main/java/org/apache/calcite/avatica/Meta.java
index b9cb42b..d69fb1c 100644
--- a/core/src/main/java/org/apache/calcite/avatica/Meta.java
+++ b/core/src/main/java/org/apache/calcite/avatica/Meta.java
@@ -577,6 +577,12 @@
           Objects.requireNonNull(signature), firstFrame, -1L);
     }
 
+    public static MetaResultSet create(String connectionId, int statementId,
+        boolean ownStatement, Signature signature, Frame firstFrame, long updateCount) {
+      return new MetaResultSet(connectionId, statementId, ownStatement,
+          Objects.requireNonNull(signature), firstFrame, updateCount);
+    }
+
     public static MetaResultSet count(String connectionId, int statementId,
         long updateCount) {
       assert updateCount >= 0