为什么Swagger在示例中创建了一个systemId字段？

Question

@POST
@Consumes(value = { MediaType.APPLICATION_JSON + ";charset=utf-8" })
@Produces(value = { MediaType.APPLICATION_JSON + ";charset=utf-8" })
@ApiOperation(value = "Create a document type", notes = "creates a document type from Json and returns the created type", response = Response.class)
@Session(roles = { Role.ROLE_ADMINISTRATOR })
@PublicApi
public Response create(
        @ApiParam(value = "Created DocumentType", required = true)
        @SwaggerDataType(type = 
           com.infor.daf.icp.internal.rest.models.DocumentType.class) 
        com.infor.daf.icp.internal.rest.models.DocumentType documentType) {

systemId (string, optional),

systemId : "string"

package com....documentarchive.rest.v1

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;

大摇大摆的UI看起来是这样的：

编辑2。
我已经删除了@swaggerdataType，或者用@requestbody替换了它，但奇怪的行为仍然存在。

我将示例设置为包含真实数据的具体字符串：

@ApiParam(example = DOC_TYPE_EXAMPLE, value = "Created DocumentType", required = true) @RequestBody com.infor.daf.icp.internal.rest.models.DocumentType documentType) {
....
    static final private String DOC_TYPE_EXAMPLE = "{'entityModel':\n" +
        "    {'name':'Anatemplate',\n" +
        "     'desc':'Ana-template',\n" +