Add output hints for HSTRLEN, XLEN, and XTRIM.

See #2473

Original pull request: #2482

Author: mp911de

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceConnection.java

@@ -1188,6 +1188,7 @@ static class TypeHints {
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HDEL, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HINCRBY, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HLEN, IntegerOutput.class);
+			COMMAND_OUTPUT_TYPE_MAPPING.put(HSTRLEN, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(INCR, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(INCRBY, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(LINSERT, IntegerOutput.class);
@@ -1210,6 +1211,8 @@ static class TypeHints {
 			COMMAND_OUTPUT_TYPE_MAPPING.put(SUNIONSTORE, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(STRLEN, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(TTL, IntegerOutput.class);
+			COMMAND_OUTPUT_TYPE_MAPPING.put(XLEN, IntegerOutput.class);
+			COMMAND_OUTPUT_TYPE_MAPPING.put(XTRIM, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(ZADD, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(ZCARD, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(ZCOUNT, IntegerOutput.class);