driver-core/src/main/com/mongodb/operation/CommandOperationHelper.java
static BsonDocument executeCommand(final WriteBinding binding, final String database, final BsonDocument command) {
        return executeCommand(binding, database, command, new IdentityWriteTransformer<BsonDocument>());
    }
static BsonDocument executeCommand(final WriteBinding binding, final String database, final BsonDocument command) {
        return executeCommand(binding, database, command, new IdentityWriteTransformer<BsonDocument>());
    }
/* Write Binding Helpers