code: @JsonInclude(Include.NON_EMPTY)
  	@JsonProperty("id")
  	public String getJsonId() {
  		if (!EntityIdValue.SITE_LOCAL.equals(this.siteIri)) {
  			return this.entityId;
  		} else {
  			return null;
  		}
  	}
docs: Returns the string id of the entity that this document refers to. Only
  for use by Jackson during serialization.
  
  @return string id