1   package com.atlassian.plugins.rest.module.jersey;
2   
3   import java.util.List;
4   import java.util.Map;
5   
6   class HeaderHelper
7   {
8       static String getSingleHeaderValue(final Map<String, List<String>> headerMap, final String headerName, final String defaultValue)
9       {
10          String value = defaultValue;
11          List<String> contentTypeHeaders = headerMap.get(headerName);
12          if (contentTypeHeaders != null && contentTypeHeaders.size() == 1)
13          {
14              value = contentTypeHeaders.get(0);
15          }
16          return value;
17      }
18  }