ElasticsearchIndicesClient getSettings does not parse default values returned from server

When calling the method ElasticsearchIndicesClient.getSettings(...) method, it is possible to add the includeDefaults parameter and set that to true:

GetSettingsResponse getSettingsResponse = client.indices()
        .getSettings(srb -> srb.index(index).includeDefaults(true));

But the GetSettingsResponse that is returned does not contain this information, although it is returned from the server (the following json was extracted from an intercepting proxy):

{
  "testindex" : {
    "settings" : {
      "index" : {
        "routing" : {
          "allocation" : {
            "include" : {
              "_tier_preference" : "data_content"
            }
          }
        },
        "number_of_shards" : "1",
        "provided_name" : "testindex",
        "creation_date" : "1636661459560",
        "number_of_replicas" : "1",
        "uuid" : "EYazsV63SXmlmFcNhRFvRw",
        "version" : {
          "created" : "7150299"
        }
      }
    },
    "defaults" : {
      "index" : {
        "flush_after_merge" : "512mb",
        "final_pipeline" : "_none",
        "max_inner_result_window" : "100",
        "unassigned" : {
          "node_left" : {
            "delayed_timeout" : "1m"
          }
        },
        "max_terms_count" : "65536",
        "rollup" : {
          "source" : {
            "name" : "",
            "uuid" : ""
          }
        },
        "lifecycle" : {
          "name" : "",
          "parse_origination_date" : "false",
          "step" : {
            "wait_time_threshold" : "12h"
          },
          "indexing_complete" : "false",
          "rollover_alias" : "",
          "origination_date" : "-1"
        },
        "routing_partition_size" : "1",
        "force_memory_term_dictionary" : "false",
        "max_docvalue_fields_search" : "100",
        "merge" : {
          "scheduler" : {
            "max_thread_count" : "1",
            "auto_throttle" : "true",
            "max_merge_count" : "6"
          },
          "policy" : {
            "floor_segment" : "2mb",
            "max_merge_at_once_explicit" : "30",
            "max_merge_at_once" : "10",
            "max_merged_segment" : "5gb",
            "expunge_deletes_allowed" : "10.0",
            "segments_per_tier" : "10.0",
            "deletes_pct_allowed" : "33.0"
          }
        },
        "max_refresh_listeners" : "1000",
        "max_regex_length" : "1000",
        "load_fixed_bitset_filters_eagerly" : "true",
        "number_of_routing_shards" : "1",
        "write" : {
          "wait_for_active_shards" : "1"
        },
        "verified_before_close" : "false",
        "mapping" : {
          "coerce" : "false",
          "nested_fields" : {
            "limit" : "50"
          },
          "depth" : {
            "limit" : "20"
          },
          "field_name_length" : {
            "limit" : "9223372036854775807"
          },
          "total_fields" : {
            "limit" : "1000"
          },
          "nested_objects" : {
            "limit" : "10000"
          },
          "ignore_malformed" : "false"
        },
        "source_only" : "false",
        "soft_deletes" : {
          "enabled" : "true",
          "retention" : {
            "operations" : "0"
          },
          "retention_lease" : {
            "period" : "12h"
          }
        },
        "max_script_fields" : "32",
        "query" : {
          "default_field" : [
            "*"
          ],
          "parse" : {
            "allow_unmapped_fields" : "true"
          }
        },
        "format" : "0",
        "frozen" : "false",
        "sort" : {
          "missing" : [ ],
          "mode" : [ ],
          "field" : [ ],
          "order" : [ ]
        },
        "priority" : "1",
        "codec" : "default",
        "max_rescore_window" : "10000",
        "max_adjacency_matrix_filters" : "100",
        "analyze" : {
          "max_token_count" : "10000"
        },
        "gc_deletes" : "60s",
        "top_metrics_max_size" : "10",
        "optimize_auto_generated_id" : "true",
        "max_ngram_diff" : "1",
        "hidden" : "false",
        "translog" : {
          "generation_threshold_size" : "64mb",
          "flush_threshold_size" : "512mb",
          "sync_interval" : "5s",
          "retention" : {
            "size" : "-1",
            "age" : "-1"
          },
          "durability" : "REQUEST"
        },
        "auto_expand_replicas" : "false",
        "mapper" : {
          "dynamic" : "true"
        },
        "recovery" : {
          "type" : ""
        },
        "requests" : {
          "cache" : {
            "enable" : "true"
          }
        },
        "data_path" : "",
        "highlight" : {
          "max_analyzed_offset" : "1000000"
        },
        "routing" : {
          "rebalance" : {
            "enable" : "all"
          },
          "allocation" : {
            "include" : {
              "_tier" : ""
            },
            "disk" : {
              "watermark" : {
                "ignore" : "false"
              }
            },
            "exclude" : {
              "_tier" : ""
            },
            "require" : {
              "_tier" : ""
            },
            "enable" : "all",
            "total_shards_per_node" : "-1"
          }
        },
        "search" : {
          "slowlog" : {
            "level" : "TRACE",
            "threshold" : {
              "fetch" : {
                "warn" : "-1",
                "trace" : "-1",
                "debug" : "-1",
                "info" : "-1"
              },
              "query" : {
                "warn" : "-1",
                "trace" : "-1",
                "debug" : "-1",
                "info" : "-1"
              }
            }
          },
          "idle" : {
            "after" : "30s"
          },
          "throttled" : "false"
        },
        "fielddata" : {
          "cache" : "node"
        },
        "default_pipeline" : "_none",
        "max_slices_per_scroll" : "1024",
        "shard" : {
          "check_on_startup" : "false"
        },
        "xpack" : {
          "watcher" : {
            "template" : {
              "version" : ""
            }
          },
          "version" : "",
          "ccr" : {
            "following_index" : "false"
          }
        },
        "percolator" : {
          "map_unmapped_fields_as_text" : "false"
        },
        "allocation" : {
          "max_retries" : "5",
          "existing_shards_allocator" : "gateway_allocator"
        },
        "refresh_interval" : "1s",
        "indexing" : {
          "slowlog" : {
            "reformat" : "true",
            "threshold" : {
              "index" : {
                "warn" : "-1",
                "trace" : "-1",
                "debug" : "-1",
                "info" : "-1"
              }
            },
            "source" : "1000",
            "level" : "TRACE"
          }
        },
        "compound_format" : "0.1",
        "blocks" : {
          "metadata" : "false",
          "read" : "false",
          "read_only_allow_delete" : "false",
          "read_only" : "false",
          "write" : "false"
        },
        "max_result_window" : "10000",
        "store" : {
          "stats_refresh_interval" : "10s",
          "type" : "",
          "fs" : {
            "fs_lock" : "native"
          },
          "preload" : [ ],
          "snapshot" : {
            "snapshot_name" : "",
            "index_uuid" : "",
            "cache" : {
              "prewarm" : {
                "enabled" : "true"
              },
              "enabled" : "true",
              "excluded_file_types" : [ ]
            },
            "repository_uuid" : "",
            "uncached_chunk_size" : "-1b",
            "index_name" : "",
            "partial" : "false",
            "blob_cache" : {
              "metadata_files" : {
                "max_length" : "64kb"
              }
            },
            "repository_name" : "",
            "snapshot_uuid" : ""
          }
        },
        "queries" : {
          "cache" : {
            "enabled" : "true"
          }
        },
        "shard_limit" : {
          "group" : "normal"
        },
        "warmer" : {
          "enabled" : "true"
        },
        "max_shingle_diff" : "3",
        "query_string" : {
          "lenient" : "false"
        }
      }
    }
  }
}

With the old RestHighLevelClient the org.elasticsearch.action.admin.indices.settings.get.GetSettingsResponse contained two entries: indexToSettings for the custom settings made by the user and indexToDefaultSettings for the default settings.

elastic / elasticsearch-java

ElasticsearchIndicesClient getSettings does not parse default values returned from server #46