private void removeObjectAndFieldMappers(DocumentMapper docMapper) {
    // we need to remove those mappers
    MapBuilder<String, FieldMappers> nameFieldMappers = newMapBuilder(this.nameFieldMappers);
    MapBuilder<String, FieldMappers> indexNameFieldMappers =
        newMapBuilder(this.indexNameFieldMappers);
    MapBuilder<String, FieldMappers> fullNameFieldMappers =
        newMapBuilder(this.fullNameFieldMappers);

    for (FieldMapper mapper : docMapper.mappers()) {
      FieldMappers mappers = nameFieldMappers.get(mapper.names().name());
      if (mappers != null) {
        mappers = mappers.remove(mapper);
        if (mappers.isEmpty()) {
          nameFieldMappers.remove(mapper.names().name());
        } else {
          nameFieldMappers.put(mapper.names().name(), mappers);
        }
      }

      mappers = indexNameFieldMappers.get(mapper.names().indexName());
      if (mappers != null) {
        mappers = mappers.remove(mapper);
        if (mappers.isEmpty()) {
          indexNameFieldMappers.remove(mapper.names().indexName());
        } else {
          indexNameFieldMappers.put(mapper.names().indexName(), mappers);
        }
      }

      mappers = fullNameFieldMappers.get(mapper.names().fullName());
      if (mappers != null) {
        mappers = mappers.remove(mapper);
        if (mappers.isEmpty()) {
          fullNameFieldMappers.remove(mapper.names().fullName());
        } else {
          fullNameFieldMappers.put(mapper.names().fullName(), mappers);
        }
      }
    }
    this.nameFieldMappers = nameFieldMappers.map();
    this.indexNameFieldMappers = indexNameFieldMappers.map();
    this.fullNameFieldMappers = fullNameFieldMappers.map();

    MapBuilder<String, ObjectMappers> fullPathObjectMappers =
        newMapBuilder(this.fullPathObjectMappers);
    for (ObjectMapper mapper : docMapper.objectMappers().values()) {
      ObjectMappers mappers = fullPathObjectMappers.get(mapper.fullPath());
      if (mappers != null) {
        mappers = mappers.remove(mapper);
        if (mappers.isEmpty()) {
          fullPathObjectMappers.remove(mapper.fullPath());
        } else {
          fullPathObjectMappers.put(mapper.fullPath(), mappers);
        }
      }
    }

    this.fullPathObjectMappers = fullPathObjectMappers.map();
  }
 public Builder removeMapping(String mappingType) {
   mappings.remove(mappingType);
   return this;
 }
 public Builder removerAlias(String alias) {
   aliases.remove(alias);
   return this;
 }