Implement batch insert for MyBatis as serial insert for now. Native batch support to be added later.

Author: ctailor2

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/mybatis/MyBatisDataAccessStrategy.java

@@ -160,8 +160,9 @@ public <T> Object insert(T instance, Class<T> domainType, Identifier identifier,
 
 	@Override
 	public <T> Object[] insert(List<RecordDescriptor<T>> recordDescriptors, Class<T> domainType, boolean includeId) {
-//		TODO: Figure out what this should look like
-		throw new UnsupportedOperationException();
+		return recordDescriptors.stream()
+				.map(recordDescriptor -> insert(recordDescriptor.getInstance(), domainType, recordDescriptor.getIdentifier(), includeId))
+				.toArray();
 	}
 
 	/*